MARY KATHARINE LYTWYN MD
NPI 1336433440
Emergency Medicine in Houston, TX

NPI Status: Active since June 06, 2011

Contact Information

20171 CHASEWOOD PARK DR
HOUSTON, TX
ZIP 77070
Phone: (832) 534-6100

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  • Individual
  • Female
  • Emergency Medicine
  • Accepts Insurance
  • PECOS Enrolled

About MARY LYTWYN

This page provides the complete NPI Profile along with additional information for Mary Lytwyn, a provider established in Houston, Texas with a medical specialization in Emergency Medicine. The healthcare provider is registered in the NPI registry with number 1336433440 assigned on June 2011. The practitioner's primary taxonomy code is 207P00000X with license number P9132 (TX). The provider is registered as an individual and her NPI record was last updated 7 years ago.

NPI
1336433440
Provider Name
MARY KATHARINE LYTWYN MD
Gender
Female
Entity Type
Individual
Location Address
20171 CHASEWOOD PARK DR HOUSTON, TX 77070
Location Phone
(832) 534-6100
Mailing Address
7 TANNERY HILL RD THE WOODLANDS, TX 77375
Mailing Phone
(956) 472-1238
Is Sole Proprietor?
Yes
Enumeration Date
06-06-2011
Last Update Date
03-17-2018
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Location Map

Secondary Locations

  • 2255 E Mossy Oaks Rd
    Spring, TX 77389
    (346) 305-5000

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

Emergency Medicine

Taxonomy Code
207P00000X
Type
Allopathic & Osteopathic Physicians
License No.
P9132
License State
TX
Taxonomy Description
An emergency physician focuses on the immediate decision making and action necessary to prevent death or any further disability both in the pre-hospital setting by directing emergency medical technicians and in the emergency department. The emergency physician provides immediate recognition, evaluation, care, stabilization and disposition of a generally diversified population of adult and pediatric patients in response to acute illness and injury.

Secondary Taxonomies

The provider has reported to the NPI enumerator additional taxonomy codes. Multiple taxonomy codes may represent subspecialties or other areas of specialization the provider maybe licensed to practice.

No. Taxonomy Code Type Classification /
Specialization
License No. (State)
1390200000XStudent, Health Care

Student in an Organized Health Care Education/Training Program

173193 (NC)

Insurance Plans Accepted

According to publicly available information the provider might be accepting the following health plans from these health insurance companies:

  • Gold 10 Advanced: $0 PCP + Aetna network + $0 walk-in clinic + Adult Dental + Vision - HMO
  • Gold 3 Advanced: Aetna network + $0 walk-in clinic + $0 CVS Health Virtual Care 24/7 - HMO
  • Gold 3 Advanced: Aetna network + $0 walk-in clinic + Adult Dental + Vision - HMO
  • Gold 4 Advanced: $0 PCP + Aetna network + $0 walk-in clinic + $0 CVS Health Virtual Care 24/7 - HMO
  • Gold S: Aetna network + $0 walk-in clinic + $0 CVS Health Virtual Care 24/7 - HMO
  • Silver 10 Advanced: $0 PCP + Aetna network + $0 walk-in clinic + $0 CVS Health Virtual Care 24/7 - HMO
  • Silver 10 Advanced: $0 PCP + Aetna network + $0 walk-in clinic + Adult Dental + Vision - HMO
  • Silver 5 Advanced: Aetna network + $0 walk-in clinic + $0 CVS Health Virtual Care 24/7 - HMO
  • Silver S: Aetna network + $0 walk-in clinic + $0 CVS Health Virtual Care 24/7 - HMO
  • Silver S: Aetna network + $0 walk-in clinic + $0 CVS Health Virtual Care 24/7 + Adult Dental+Vision - HMO
  • 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

*Please verify directly with this provider to make sure your insurance plan is currently accepted.

Medicare Participation & PECOS Enrollment Status

Mary Lytwyn 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

  • 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

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.

Critical care, first 30-74 minutes

Critical care involves immediate and constant attention by a team of specially-trained health professionals. It's for patients with life-threatening conditions, requiring first 30-74 minutes of intense monitoring and treatment.

This service was performed 14 times for 14 patients

Emergency department visit for life threatening or functioning severity

An emergency department visit for severe conditions is when you urgently seek medical help due to serious health issues. These could be severe injuries, breathing problems, unbearable pain, or sudden severe illness. Doctors and nurses will provide immediate care to stabilize your condition.

This service was performed 109 times for 102 patients

Emergency department visit for problem of high severity

An emergency department visit for a high-severity issue means you're experiencing a serious health problem that needs immediate attention. This could be a severe injury, serious illness, or life-threatening condition. Medical professionals will provide urgent care to stabilize your condition.

This service was performed 26 times for 26 patients

Emergency department visit for problem of moderate severity

An emergency department visit for a problem of moderate severity involves immediate medical attention for issues like minor fractures, burns, or high fever. The healthcare team will assess your condition, provide necessary treatment, and may suggest further tests or admission if required.

This service was performed 12 times for 12 patients

Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only

A routine electrocardiogram (ECG) with 12 leads is a simple, non-invasive test that records the electrical activity of your heart. It helps in identifying heart conditions by detecting irregularities in your heart rhythms. The results are interpreted and a report is provided.

This service was performed 59 times for 58 patients

Physician Visit Costs

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 77070 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.

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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.
1336433440
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
236683648
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 3 + 6 + 6 + 8 + 3 + 6 + 4 + 8 + 24 = 70
Step 3: because the number obtained in step 2 ends in zero, the check digit is zero.
0

The NPI number 1336433440 is valid because the calculated check digit 0 using the Luhn validation algorithm matches the last digit of the original NPI number.

Other Providers at the Same Location


The following 20 providers are registered at the same or nearby location.

NPI Name / Type Taxonomy Address
1710314141ST. LUKES HOSPITAL AT THE VINTAGE
Organization
General Acute Care Hospital20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(832) 534-5000
1720096498 SAI PADMAJA ACHANTA P.A.
Individual
Physician Assistant20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(713) 798-3111
1629516489 ANGELA HARE AGACNP-BC, FNP-C
Individual
Nurse Practitioner (Acute Care)20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(713) 798-3111
1427549831WELLSPRING MEDICAL CARE PLLC
Organization
Internal Medicine20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(612) 567-9160
1164883807DR. JAMES LIU D.O.
Individual
Internal Medicine20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(210) 495-0224
1669489704 AMY D. CIBOROWSKI M.D.
Individual
Internal Medicine20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(713) 798-3111
1497742746 SYED SALEEM IQBAL-AHMED SHAMSEE MD
Individual
Hospitalist20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(713) 798-3111
1922411081MR. JEFFREY SCOTT BRADY CRNA
Individual
Nurse Anesthetist, Certified Registered20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(832) 355-2666
1114362951 MEREDITH ELIZABETH DAVENPORT CRNA
Individual
Nurse Anesthetist, Certified Registered20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(832) 534-5000
1619504909DR. RAZA ALI MASTER DO
Individual
Emergency Medicine20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(904) 337-9570
1811976350 ANGELA DAVIDSON
Individual
Nurse Anesthetist, Certified Registered20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(832) 534-5000
1871121574 CHIKAODINAKA IHEJIENE MD
Individual
Emergency Medicine20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(832) 534-5000
1609139369DR. HOMAIRA AHMED M.D
Individual
Hospitalist20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(631) 567-9160
1396083556 CARLA E JORDAN-MARTIN CRNA
Individual
Nurse Anesthetist, Certified Registered20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(183) 253-4500
1386176386 TRANG HA
Individual
Anesthesiology20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(183) 253-4500
1992062616MISS THANH NGOC PHAM M.D.
Individual
Hospitalist20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(832) 534-5000
1548600448 JAMAL MOHSIN M.D.
Individual
Internal Medicine20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(832) 534-5000
1750776019DR. SAFEERA JAVED MD
Individual
Hospitalist20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(713) 798-3111
1578819470 NAJAMUS SEHAR MD
Individual
Hospitalist20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(832) 534-5000
1457771081 JITEN JAYANTILAL BHULA MD
Individual
Hospitalist20171 CHASEWOOD PARK DR
HOUSTON, TX 77070
(832) 534-5000

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1336433440, enumerated in the NPI registry as an "individual" on June 06, 2011

The provider is located at 20171 Chasewood Park Dr Houston, Tx 77070 and the phone number is (832) 534-6100

The provider's speciality is Emergency Medicine with taxonomy code 207P00000X

The provider might be accepting Accepts: Aetna CVS Health and Blue Cross and Blue Shield of. 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: Critical care, first 30-74 minutes, Emergency department visit for life threatening or functioning severity, Emergency department visit for problem of high severity, Emergency department visit for problem of moderate severity and Routine electrocardiogram (ecg) using at least 12 leads with interpretation and report only.

This NPI record was last updated on June 06, 2011. 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.