DR. GEETI MAHAJAN M.D.
NPI 1538320510
Internal Medicine - Endocrinology, Diabetes & Metabolism in Emerson, NJ

NPI Status: Active since June 22, 2008

Contact Information

452 OLD HOOK RD FL 2
EMERSON, NJ
ZIP 07630
Phone: (201) 666-3900
Fax: (201) 261-0505

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  • Individual
  • Female
  • Years of Experience 20
  • Internal Medicine
  • Endocrinology, Diabetes & Metabolism
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About GEETI MAHAJAN

This page provides the complete NPI Profile along with additional information for Geeti Mahajan, an internist established in Emerson, New Jersey with a medical specialization in Internal Medicine, focusing in endocrinology, diabetes & metabolism and more than 20 years of experience. The healthcare provider is registered in the NPI registry with number 1538320510 assigned on June 2008. The practitioner's primary taxonomy code is 207RE0101X with license number 25MA10543800 (NJ). The provider is registered as an individual and her NPI record was last updated 6 years ago.

NPI
1538320510
Provider Name
DR. GEETI MAHAJAN M.D.
Gender
Female
Entity Type
Individual
Location Address
452 OLD HOOK RD FL 2 EMERSON, NJ 07630
Location Phone
(201) 666-3900
Location Fax
(201) 261-0505
Mailing Address
PO BOX 419430 BOSTON, MA 02241
Mailing Phone
(201) 967-8221
Mailing Fax
(201) 261-0505
Medical School Name
OTHER
Graduation Year
2006
Is Sole Proprietor?
No
Enumeration Date
06-22-2008
Last Update Date
05-29-2019
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An internist like Geeti Mahajan is a physician who has completed an internal medicine residency and is board-certified or board-eligible in an internist specialty. Internists are trained to care for adults of all ages for many different medical conditions. An internist typically monitors chronic physical conditions, identifies acute diseases, provides family planning, provides counseling about wellness and disease prevention, etc.

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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

Internal Medicine Endocrinology, Diabetes & Metabolism

Taxonomy Code
207RE0101X
Type
Allopathic & Osteopathic Physicians
License No.
25MA10543800
License State
NJ
Taxonomy Description
An internist who concentrates on disorders of the internal (endocrine) glands such as the thyroid and adrenal glands. This specialist also deals with disorders such as diabetes, metabolic and nutritional disorders, obesity, pituitary diseases and menstrual and sexual problems.

Medicare Participation & PECOS Enrollment Status

Geeti Mahajan 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.

Geeti Mahajan 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: 4183872260

    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: I20210721000527

    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)

    Supply allowance for therapeutic continuous glucose monitor (cgm), includes all supplies and accessories, 1 month supply = 1 unit of service (HCPCS:K0553)

    7 DME suppliers used 44 Medicare Claims 44 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.

Established patient office or other outpatient visit, 30-39 minutes

This is a routine check-up for patients who have previously visited our clinic. It involves a comprehensive review of your health and any ongoing treatments. The consultation lasts between 30-39 minutes, allowing enough time to discuss any concerns.

This service was performed 56 times for 34 patients

Follow-up hospital inpatient care per day, typically 15 minutes

Follow-up hospital inpatient care is a daily service where a healthcare professional checks on your health progress during your hospital stay. Each session typically lasts 15 minutes, involving updates on your condition and adjustments to your treatment plan, if necessary.

This service was performed 45 times for 28 patients

Initial hospital inpatient care per day, typically 30 minutes

Initial hospital inpatient care refers to the first day of your stay in the hospital. This service typically includes a 30-minute check-up with a healthcare professional. They'll assess your health, discuss your condition, and plan your treatment. It's part of ensuring you receive the best possible care.

This service was performed 20 times for 20 patients

New patient office or other outpatient visit, 45-59 minutes

This is a first-time office or outpatient visit lasting between 45-59 minutes. The healthcare provider evaluates your health, discusses your medical history, and may suggest further tests or treatments. It's an opportunity to ask questions and understand your health better.

This service was performed 40 times for 40 patients

Physician Visit Costs



The typical physician office visit costs for Medicare beneficiaries in this area are: $36.21 for a new patient copayment and $27.89 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 07630 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99204

  • Average New Patient Price $144.86
  • Minimum New Patient Price $63.84
  • Maximum New Patient Price $190.92
  • Average New Patient Copayment $36.21
  • Minimum New Patient Copayment $15.96
  • Maximum New Patient Copayment $47.73

Established Patients Visit Costs *

The most utilized procedure code for established patients office visits is 99214

  • Average Established Patient Price $111.57
  • Minimum Established Patient Price $20.97
  • Maximum Established Patient Price $155.92
  • Average Established Patient Copayment $27.89
  • Minimum Established Patient Copayment $5.24
  • Maximum Established Patient Copayment $38.98

* 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.

Find Provider Hospital Affiliations - Privileges

Doctors and physicians must apply for hospital privileges to treat patients at hospitals. Find out if your doctor has privileges to practice at your preferred hospital by using the hospital affiliation information below based on recent medical claims.

Hospital affiliation is identified through self-reporting data, inpatient, outpatient, physician and ancillary service claims linked by the medical claims NPI number and place of service code. Additionally, to further determine provider hospital affiliation the clinician must have provided services to at least three patients on three different dates in the last 12 months. Geeti Mahajan is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
MAIMONIDES MEDICAL CENTER4802 TENTH AVENUE
BROOKLYN, NY 11219
(718) 283-6000Acute Care Hospitals

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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.
1538320510
Step 1: Double the value of the alternate digits, beginning with the rightmost digit.
256862052
Step 2: Add all the doubled and unaffected individual digits from step 1 plus the constant number 24.
2 + 5 + 6 + 8 + 6 + 2 + 0 + 5 + 2 + 24 = 60
Step 3: because the number obtained in step 2 ends in zero, the check digit is zero.
0

The NPI number 1538320510 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 4 providers are registered at the same or nearby location.

NPI Name / Type Taxonomy Address
1356566541 KATHE OLOHAN RN APN
Individual
Nurse Practitioner (Adult Health)452 OLD HOOK RD FL 2
EMERSON, NJ 07630
(201) 666-3900
1922323120 HARMONY LEIGHTON-SEIFFER DO
Individual
Internal Medicine (Cardiovascular Disease)452 OLD HOOK RD FL 2
EMERSON, NJ 07630
(201) 666-3900
1679580823 DANIELLE B GROVES MD
Individual
Physical Medicine & Rehabilitation452 OLD HOOK RD FL 2
EMERSON, NJ 07630
(201) 666-3900
1366419145 SYLVA A. TAKVORIAN M.D.
Individual
Internal Medicine452 OLD HOOK RD FL 2
EMERSON, NJ 07630
(201) 666-3900

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1538320510, enumerated in the NPI registry as an "individual" on June 22, 2008

The provider is located at 452 Old Hook Rd Fl 2 Emerson, Nj 07630 and the phone number is (201) 666-3900

The provider's speciality is Internal Medicine with taxonomy code 207RE0101X with a focus in Endocrinology, Diabetes & Metabolism

The provider has more than 20 years of experience.

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 $144.86 with an average copayment of $36.21 for new patient appointments. Established patients should expect a typical charge of $111.57 and an average copayment of 27.89. 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: Established patient office or other outpatient visit, 30-39 minutes, Follow-up hospital inpatient care per day, typically 15 minutes, Initial hospital inpatient care per day, typically 30 minutes and New patient office or other outpatient visit, 45-59 minutes.

The practitioner is affiliated to the following hospital(s): MAIMONIDES MEDICAL CENTER. Hospital affiliations are identified through self-reporting data and service claims based on the place of service.

This NPI record was last updated on June 22, 2008. 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].
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