SHANNON MCALLISTER GREGOREK NP-C
NPI 1790929099
Nurse Practitioner - Family in Houston, TX
NPI Status: Active since April 30, 2009
Contact Information
9539 HUFFMEISTER RD
HOUSTON, TX
ZIP 77095
Phone: (832) 593-8100
Fax: (832) 593-8105
- Individual
- Female
- Years of Experience 22
- Nurse Practitioner
- Family
- Accepts Insurance
- Accepts Medicare Approved Payment
- PECOS Enrolled
About SHANNON GREGOREK
This page provides the complete NPI Profile along with additional information for Shannon Gregorek, a provider established in Houston, Texas with a medical specialization in Nurse Practitioner, focusing in family and more than 22 years of experience. The healthcare provider is registered in the NPI registry with number 1790929099 assigned on April 2009. The practitioner's primary taxonomy code is 363LF0000X with license number 671422 (TX). The provider is registered as an individual and her NPI record was last updated 9 years ago.
- NPI
- 1790929099
- Provider Name
- SHANNON MCALLISTER GREGOREK NP-C
- Gender
- Female
- Entity Type
- Individual
- Location Address
- 9539 HUFFMEISTER RD HOUSTON, TX 77095
- Location Phone
- (832) 593-8100
- Location Fax
- (832) 593-8105
- Mailing Address
- 9539 HUFFMEISTER RD HOUSTON, TX 77095
- Mailing Phone
- (832) 593-8100
- Mailing Fax
- (832) 593-8105
- Medical School Name
- OTHER
- Graduation Year
- 2004
- Is Sole Proprietor?
- Yes
- Enumeration Date
- 04-30-2009
- Last Update Date
- 05-12-2016
- Code Navigator
A nurse practitioner (NP) like Shannon Gregorek is an experienced registered nurse with a master’s or doctoral degree and advanced clinical training. Nurse practitioners can work in many different specialties including primary care, pediatrics, cardiology, emergency, women’s health, oncology or geriatrics. Nurse practitioners provide services like physical exams, order laboratory tests, manage diseases, write prescriptions, etc.
Location Map
Specialty - Primary Taxonomy
The NPI enumerator requires providers to submit at least one taxonomy code. A taxonomy code is a unique 10-character code that describes the healthcare provider type, classification, and the area of specialization. There could be only one primary taxonomy code per NPI record. For individual NPIs the license data is associated to the taxonomy code.
- Classification
Nurse Practitioner Family
- Taxonomy Code
- 363LF0000X
- Type
- Physician Assistants & Advanced Practice Nursing Providers
- License No.
- 671422
- License State
- TX
Insurance Plans Accepted
According to publicly available information the provider might be accepting the following health plans from these health insurance companies:
- Blue Advantage Bronze HMO? 204 - HMO
- Blue Advantage Bronze HMO? 301 - HMO
- Blue Advantage Bronze HMO? Standard - HMO
- Blue Advantage Gold HMO? 206 - HMO
- Blue Advantage Gold HMO? 603 - HMO
- Blue Advantage Gold HMO? Standard - HMO
- Blue Advantage Plus Bronze? 303 - POS
- Blue Advantage Plus Bronze? 305 - POS
- Blue Advantage Plus Bronze? Standard - POS
- Blue Advantage Plus Gold? 203 - POS
- Blue Advantage Plus Gold? 803 - POS
- Blue Advantage Plus Gold? Standard - POS
- Blue Advantage Plus Silver? 202 - POS
- Blue Advantage Plus Silver? 605 - POS
- Blue Advantage Plus Silver? Standard - POS
- Blue Advantage Security HMO? 200 - HMO
- Blue Advantage Silver HMO? 205 - HMO
- Blue Advantage Silver HMO? 801 - HMO
- Blue Advantage Silver HMO? Standard - HMO
- MyBlue Health Bronze? 402 - HMO
- Community Premier Bronze 003 (No deductible for PCP, Free Preventive Care, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Premier Bronze 018 (No deductible for PCP, Specialists & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Premier Gold 005 (No Deductible for PCP, Specialists & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Premier Gold 021 (No Deductible for PCP, Specialists & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Premier Silver 012 (No deductible for PCP, Urgent Care & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Premier Silver 020 (No Deductible for PCP, Specialists & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Select Bronze 016 (No deductible for PCP & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Select Gold 022 (No Deductible for PCP, Specialists & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Community Select Silver 019 (No Deductible for PCP, Specialists & Generics, $0 PCP 24/7 Virtual Care Options) - HMO
- Gold 1 - HMO
- Gold 1 with Adult Vision Services - HMO
- Gold 12 - HMO
- Gold 8 - HMO
- Silver 1 - HMO
- Silver 1 with Adult Vision Services - HMO
- Silver 12 with First 4 Primary Care Visits Free - HMO
- Silver 8 - HMO
- Bronze Classic 4700 - EPO
- Bronze Classic Standard - EPO
- Bronze Elite + PCP Saver Plus - EPO
- Gold Classic - EPO
- Gold Classic Guided Care - HMO
- Gold Classic Standard - EPO
- Gold Classic Standard Guided Care - HMO
- Gold Elite - EPO
- Gold Simple Guided Care - HMO
- Silver Classic - EPO
- Silver Classic Standard - EPO
- Silver Classic Standard Guided Care - HMO
- Silver Simple Chronic Care CKM Guided Care - HMO
- Silver Simple Diabetes Guided Care - HMO
- Silver Simple Guided Care - HMO
- Silver Simple PCP Saver - EPO
- Silver Simple PCP Saver Guided Care - HMO
- UHC Bronze Copay Focus $0 Indiv Med Ded ($0 Virtual Urgent Care) - HMO
- UHC Bronze Standard - HMO
- UHC Bronze Value ($0 Virtual Urgent Care, $3 Tier 2 Rx) - HMO
- UHC Gold Advantage ($0 Virtual Urgent Care, $3 Tier 2 Rx) - HMO
- UHC Gold Advantage+ ($0 Virtual Urgent Care, $3 Tier 2 Rx, Dental + Vision) - HMO
- UHC Gold Standard - HMO
- UHC Gold Standard $0 Indiv Ded ($0 Virtual Urgent Care) - HMO
- UHC Silver Advantage ($0 Virtual Urgent Care, $3 Tier 2 Rx) - HMO
- UHC Silver Advantage+ ($0 Virtual Urgent Care, $3 Tier 2 Rx, Dental + Vision) - HMO
- UHC Silver Standard - HMO
- UHC Silver Value ($0 Virtual Urgent Care, $3 Tier 2 Rx) - HMO
*Please verify directly with this provider to make sure your insurance plan is currently accepted.
Medicare Participation & PECOS Enrollment Status
Shannon Gregorek is registered with Medicare and accepts claims assignment, this means the provider accepts the approved amount for the cost of rendered services as full payment. Participating providers may not charge beneficiaries more than the approved amount for their services. Please keep in mind that beneficiaries still have to pay a coinsurance or copayment amount for a visit or service.
Shannon Gregorek is enrolled in PECOS and is eligible to order or refer health care services for Medicare patients. The provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
What is PECOS?
PECOS is the online Medicare enrollment management system or Provider, Enrollment, Chain and Ownership System. The PECOS system is a database of providers who have registered with CMS as providers or suppliers. PECOS is the primary source of information about verified Medicare professionals. Providers that want to participate in this program need to enroll in PECOS with their NPI number to avoid denied claims.
Is the provider registered in PECOS? Yes
PECOS PAC ID: 6800942137
What is the PECOS Associate Control ID?
A PAC ID is a unique 10-digit number assigned to an individual or organization healthcare provider in PECOS. The PAC ID is used to link together all the provider information, like tax identification numbers and organizational names. A PAC ID can be connected to multiple Enrollment IDs if an individual or organization has enrolled in PECOS more than once.PECOS Enrollment ID: I20090928000664
What is the Provider Enrollment ID?
The Enrollment ID is a unique alphanumeric 15-digit code assigned to each new provider's PECOS enrollment application. The Enrollment ID is used to link together all the provider enrollment information like enrollment type, state, provider specialty, and reassignment of benefits.Accepts Medicare Assignment? Yes
What does it mean "accepts medicare assignment"?
When a provider accepts Medicare assignment, the provider agrees to be paid directly by Medicare and to accept the payment amount approved by Medicare. Additionally, the provider agrees to not bill patients for more than the Medicare deductible and coinsurance amounts.
A provider who doesn't accept assignment may charge you up to 15% over the Medicare-approved amount. This is known as the limiting charge. You may have to pay this amount, or it may be covered by another insurer.Eligible to Order or Refer Part B Clinical Laboratory and Imaging: Yes
Eligible to Order or Refer Durable Medical Equipment (DMEPOS): Yes
Eligible to Order or Refer a Home Health Agency (HHA): Yes
Eligible to Order or Refer Power Mobility Devices: Yes
Provider Referred Orders for Durable Medical Equipment, Devices & Supplies
The following list reflects the services, supplies or durable medical equipment ordered by this provider to a DME supplier on behalf of patients. The information below is derived from Medicare claims data and reflects the BETOS category, HCPCS code information and the number times each service was submitted under the Medicare fee-for-service program.
Durable Medical Equipment
DME-Other DME (DE017N)
Blood glucose test or reagent strips for home blood glucose monitor, per 50 strips (HCPCS:A4253)
20 DME suppliers used 48 Medicare Claims 263 Services Paid
DME-Medical/Surgical Supplies (DA000N)
Lancets, per box of 100 (HCPCS:A4259)
10 DME suppliers used 19 Medicare Claims 44 Services Paid
DME-Other DME (DE017N)
Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service (HCPCS:K0553)
9 DME suppliers used 154 Medicare Claims 154 Services Paid
Areas of Expertise
The following services and procedures, recently provided to Medicare patients, illustrate the range of care this provider offers. This list reflects the variety of services available to all patients visiting the practice and is based on 2022 Medicare dataset. In general, the more frequently a provider treats specific conditions or performs particular procedures, the more experienced they become in addressing similar patient needs. The provider has delivered many of the services listed below to Medicare patients. Please note that this list does not include services provided to patients who are not covered by Medicare.
Blood test, comprehensive group of blood chemicals
Blood test, lipids (cholesterol and triglycerides)
Blood test, thyroid stimulating hormone (tsh)
Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count
Hemoglobin a1c level
Insertion of needle into vein for collection of blood sample
Parathormone (parathyroid hormone) level
Thyroxine (thyroid chemical), free
Vitamin d-3 level
A comprehensive group of blood chemicals test, also known as a comprehensive metabolic panel, is a blood test that measures your sugar level, electrolyte and fluid balance, kidney function, and liver function. This helps to check your body's overall health.
This service was performed 229 times for 104 patientsA lipid panel is a blood test that measures fats and fatty substances, such as cholesterol and triglycerides. These substances are used by your body as a source of energy. High levels can lead to health issues, including heart disease.
This service was performed 198 times for 92 patientsA TSH blood test measures the level of thyroid stimulating hormone in your body. This hormone is produced by the pituitary gland and regulates how your thyroid works. It's a simple procedure where a small amount of blood is drawn from your arm for analysis.
This service was performed 224 times for 104 patientsA Complete Blood Cell Count is a common test that measures various components of the blood, including red cells (carry oxygen), white cells (fight infection), and platelets (help blood clot). An automated test ensures accuracy. The differential count provides detailed information about white cell types.
This service was performed 100 times for 49 patientsHemoglobin A1c (HbA1c) is a test that measures your average blood sugar level over the past 2-3 months. It's used to monitor how well diabetes is being controlled. High levels may indicate that your diabetes treatment plan needs adjustment.
This service was performed 191 times for 87 patientsThis procedure involves inserting a small needle into a vein, typically in your arm, to collect a blood sample. It's a quick and simple process to help diagnose or monitor health conditions. You may feel a small prick, but discomfort is minimal.
This service was performed 106 times for 73 patientsThe Parathormone level test measures the amount of parathyroid hormone in your blood. This hormone controls calcium and phosphorus levels in the body, which are vital for bone health. Abnormal levels may indicate issues like kidney disease or parathyroid gland disorders.
This service was performed 28 times for 14 patientsThe Thyroxine (thyroid chemical), free test is a blood test that measures the level of free T4 in your body. T4 is a hormone produced by your thyroid gland and is essential for growth and metabolism. If your T4 levels are too high or too low, it could indicate a thyroid disorder.
This service was performed 214 times for 99 patientsA Vitamin D-3 level test measures the amount of Vitamin D-3, a crucial nutrient, in your body. This test helps identify if your levels are too low or too high. Low levels may lead to bone weakness, while high levels could harm your kidneys. It's a simple blood test.
This service was performed 145 times for 79 patientsPhysician Visit Costs
The typical physician office visit costs for Medicare beneficiaries in this area are: $22.6 for a new patient copayment and $25.67 for an established patient copayment.
The pricing information below displays the copayment minimum, maximum and average amount that patients under Medicare are charged when visiting this provider as a new or established patient. Please keep in mind that these prices are just for reference purposes, and the actual prices charged by the provider might be different.
For patients covered under private health plans the prices below are also useful as healthcare pricing for private insurance is usually established as a function of Medicare prices. Private insurance covered patients should check their individual plans to determine the exact pricing.
The prices below reflect the costs for new and established patients in the 77095 ZIP code area.
New Patients Visit Costs *
The most utilized procedure code for new patients office visits is 99203
- Average New Patient Price $90.4
- Minimum New Patient Price $58.24
- Maximum New Patient Price $176.98
- Average New Patient Copayment $22.6
- Minimum New Patient Copayment $14.56
- Maximum New Patient Copayment $44.24
Established Patients Visit Costs *
The most utilized procedure code for established patients office visits is 99214
- Average Established Patient Price $102.71
- Minimum Established Patient Price $18.6
- Maximum Established Patient Price $143.93
- Average Established Patient Copayment $25.67
- Minimum Established Patient Copayment $4.65
- Maximum Established Patient Copayment $35.98
* The physician office visit costs information is generated by statistical analysis of similar providers in the same geographical area. The pricing information above IS NOT the amount charged by this provider.
Reviews for SHANNON MCALLISTER GREGOREK NP-C
There are currently no reviews for this provider. Be the first person to share your experience with this provider by filling out our review form. Your insights are appreciated and will help others make informed decisions.
NPI Validation Check Digit Calculation
The following table explains the step by step NPI number validation process using the ISO standard Luhn algorithm.
Start with the original NPI number, the last digit is the check digit and is not used in the calculation. | |||||||||
1 | 7 | 9 | 0 | 9 | 2 | 9 | 0 | 9 | 9 |
Step 1: Double the value of the alternate digits, beginning with the rightmost digit. | |||||||||
2 | 7 | 18 | 0 | 18 | 2 | 18 | 0 | 18 | |
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24. | |||||||||
2 + 7 + 1 + 8 + 0 + 1 + 8 + 2 + 1 + 8 + 0 + 1 + 8 + 24 = 71 | |||||||||
Step 3: Subtract the total obtained in step 2 from the next higher number ending in zero, the result is the check digit. | |||||||||
80 - 71 = 9 | 9 |
The NPI number 1790929099 is valid because the calculated check digit 9 using the Luhn validation algorithm matches the last digit of the original NPI number.
Other Providers at the Same Location
The following 10 providers are registered at the same or nearby location.
NPI | Name / Type | Taxonomy | Address |
---|---|---|---|
1457335069 | NEHA PATEL DO Individual | Psychiatry & Neurology (Psychiatry) | 9539 HUFFMEISTER RD HOUSTON, TX 77095 (832) 593-8100 |
1386629699 | RAKESH PATEL DO Individual | Internal Medicine (Endocrinology, Diabetes & Metabolism) | 9539 HUFFMEISTER RD HOUSTON, TX 77095 (832) 593-8100 |
1942573340 | NADIA YOUNUS PA-C Individual | Physician Assistant | 9539 HUFFMEISTER RD HOUSTON, TX 77095 (832) 593-8100 |
1780088674 | EXPLORE GROWTH COUNSELING AND CONSULTING, PLLC Organization | Counselor (Professional) | 9539 HUFFMEISTER RD HOUSTON, TX 77095 (832) 786-8559 |
1013219146 | PLB UNITED, PA Organization | Physical Medicine & Rehabilitation (Pain Medicine) | 9539 HUFFMEISTER RD HOUSTON, TX 77095 (713) 475-8686 |
1669685822 | DR. LOUISE G VANASSE M.D. Individual | Pediatrics (Pediatric Endocrinology) | 9539 HUFFMEISTER RD HOUSTON, TX 77095 (281) 855-9991 |
1427662410 | OLUBUNMI ASANA MD PLLC Organization | Psychiatry & Neurology (Psychiatry) | 9539 HUFFMEISTER RD HOUSTON, TX 77095 (281) 463-0889 |
1316315807 | ALYSSA MARIE SANCHEZ PA-C Individual | Physician Assistant | 9539 HUFFMEISTER RD HOUSTON, TX 77095 (832) 593-8100 |
1831454644 | DR. PAUL BUTLER D.O. Individual | Psychiatry & Neurology (Psychiatry) | 9539 HUFFMEISTER RD HOUSTON, TX 77095 (936) 499-1936 |
1417120221 | DR. VEENA RAMCHANDRA WATWE M.D. Individual | Internal Medicine (Endocrinology, Diabetes & Metabolism) | 9539 HUFFMEISTER RD HOUSTON, TX 77095 (832) 593-8100 |
Frequently Asked Questions
The NPI number assigned to this healthcare provider is 1790929099, enumerated in the NPI registry as an "individual" on April 30, 2009
The provider is located at 9539 Huffmeister Rd Houston, Tx 77095 and the phone number is (832) 593-8100
The provider's speciality is Nurse Practitioner with taxonomy code 363LF0000X with a focus in Family
The provider has more than 22 years of experience.
The provider might be accepting Accepts: Blue Cross and Blue Shield of Texas, Community. Please consult your insurance carrier or call the provider to make sure your health plan is currently accepted.
Yes, as of June 20, 2025 the provider is registered in PECOS and is eligible to order health care services or supplies for Medicare patients. If you are a beneficiary the provider is eligible to order or refer: Part B Clinical Laboratory and Imaging, Durable Medical Equipment (DME), a Home Health Agency (HHA) and Power Mobility Devices.
Medicare beneficiaries should expect a typical cost of $90.4 with an average copayment of $22.6 for new patient appointments. Established patients should expect a typical charge of $102.71 and an average copayment of 25.67. Please review your insurance plan or contact the provider directly to determine your specific costs.
The most common procedures or services performed by this practitioner are: Blood test, comprehensive group of blood chemicals, Blood test, lipids (cholesterol and triglycerides), Blood test, thyroid stimulating hormone (tsh), Complete blood cell count (red cells, white blood cell, platelets), automated test and automated differential white blood cell count, Hemoglobin a1c level, Insertion of needle into vein for collection of blood sample, Parathormone (parathyroid hormone) level, Thyroxine (thyroid chemical), free and Vitamin d-3 level.
This NPI record was last updated on April 30, 2009. To officially update your NPI information contact the National Plan and Provider Enumeration System (NPPES) at 1-800-465-3203 (NPI Toll-Free) or by email at [email protected].
NPI Profile data is regularly updated with the latest NPI registry information, if you would like to update or remove your NPI Profile in this website please contact us.