DR. ANNE-MARIE PIERRE HAJJAR M.D.
NPI 1265419832
Internal Medicine - Geriatric Medicine in Houston, TX

NPI Status: Active since December 27, 2005

Contact Information

1515 HOLCOMBE BLVD
HOUSTON, TX
ZIP 77030
Phone: (713) 792-6161

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  • Individual
  • Female
  • Internal Medicine
  • Geriatric Medicine
  • PECOS Enrolled

About ANNE-MARIE HAJJAR

This page provides the complete NPI Profile along with additional information for Anne-marie Hajjar, an internist established in Houston, Texas with a medical specialization in Internal Medicine, focusing in geriatric medicine . The healthcare provider is registered in the NPI registry with number 1265419832 assigned on December 2005. The practitioner's primary taxonomy code is 207RG0300X with license number M5205 (TX). The provider is registered as an individual and her NPI record was last updated May 2026.

NPI
1265419832
Provider Name
DR. ANNE-MARIE PIERRE HAJJAR M.D.
Gender
Female
Entity Type
Individual
Location Address
1515 HOLCOMBE BLVD HOUSTON, TX 77030
Location Phone
(713) 792-6161
Mailing Address
P O BOX 4439 HOUSTON, TX 77210
Mailing Phone
(713) 792-2991
Is Sole Proprietor?
No
Enumeration Date
12-27-2005
Last Update Date
05-20-2026
Code Navigator

An internist like Anne-marie Hajjar 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.

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

Internal Medicine Geriatric Medicine

Taxonomy Code
207RG0300X
Type
Allopathic & Osteopathic Physicians
License No.
M5205
License State
TX
Taxonomy Description
An internist who has special knowledge of the aging process and special skills in the diagnostic, therapeutic, preventive and rehabilitative aspects of illness in the elderly. This specialist cares for geriatric patients in the patient's home, the office, long-term care settings such as nursing homes and the hospital.

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)
1207R00000XAllopathic & Osteopathic Physicians

Internal Medicine

M5205 (TX)

Insurance Plans Accepted

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

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

Specific plan information not avaialable, please contact the provider to verify if your insurance plan is accepted.

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

Additional Identifiers

The NPI Enumerator encourages providers to submit additional identifiers with their NPI application although the submission of this information is optional. The additional identifier(s) section includes other numbers or codes currently or formerly used as an identifier for the provider by other public healthcare entities. The identifiers may include UPIN, NSC, OSCAR, DEA, Medicaid State or PIN identification numbers.

Identifier Type / Code Identifier State Identifier Issuer
8BL774OTHER (01)TXBCBS
202574402MEDICAID (05)TX 
1046931MEDICAID (05)LA 

Medicare Participation & PECOS Enrollment Status

Anne-marie Hajjar 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

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 77030 ZIP code area.

New Patients Visit Costs *

The most utilized procedure code for new patients office visits is 99205

  • Average New Patient Price $176.98
  • Minimum New Patient Price $58.24
  • Maximum New Patient Price $176.98
  • Average New Patient Copayment $44.24
  • 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 DR. ANNE-MARIE PIERRE HAJJAR M.D.

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NPI NPI Number Validation

How NPI Validation Works

The NPI validation process uses the ISO-standard Luhn algorithm, a mathematical "handshake", to ensure that a provider's 10-digit ID is authentic and free of common typing errors.

To verify the NPI 1265419832, we treat the final digit (2) as the Check Digit—the target answer we need to reach. The process begins by taking the first nine digits and adding a constant value of 24, which accounts for the "80840" prefix required for all U.S. health identifiers. We then double every other digit starting from the right and sum the individual digits of those results together. For this specific NPI, that total comes to 68. The final step is to find the difference between that total and the next multiple of ten (70 - 68 = 2).

Digit-by-digit view

Use the first nine digits for the calculation. Starting from the right, double every other digit. The last digit is the check digit and is not part of the calculation.

Pos 1
1
Doubled → 2
Pos 2
2
Unchanged
Pos 3
6
Doubled → 12 → 1 + 2
Pos 4
5
Unchanged
Pos 5
4
Doubled → 8
Pos 6
1
Unchanged
Pos 7
9
Doubled → 18 → 1 + 8
Pos 8
8
Unchanged
Pos 9
3
Doubled → 6
Check
2
Target digit
Regular digit Doubled digit Check digit

Step 1: Double every other digit from the right

Starting with the rightmost digit of the first nine digits, double every other value. If doubling creates a two-digit number, add those digits together.

1 → 2 6 → 12 → 3 4 → 8 9 → 18 → 9 3 → 6

Step 2: Add all digits plus the NPI constant

Add the transformed values, the unchanged digits, and the constant 24.

2 + 2 + 1 + 2 + 5 + 8 + 1 + 1 + 8 + 8 + 6 + 24 = 68

Step 3: Find the amount needed to reach the next multiple of 10

The next multiple of ten after 68 is 70. The difference is the calculated check digit.

70 - 68 = 2
This NPI is valid
The calculated check digit is 2, which matches the last digit of 1265419832.

Other Providers at the Same Location


The following 19 providers are registered at the same or a nearby location.

Ophthalmology
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Internal Medicine
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Clinical Neuropsychologist
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Nurse Anesthetist, Certified Registered
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HOUSTON, TX 77030
Internal Medicine (Hematology & Oncology)
1515 HOLCOMBE BLVD, UNIT 426
HOUSTON, TX 77030
Internal Medicine (Rheumatology)
1515 HOLCOMBE BLVD
HOUSTON, TX 77030
Internal Medicine
1515 HOLCOMBE BLVD
HOUSTON, TX 77030
Urology
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Genetic Counselor, MS
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HOUSTON, TX 77030
Nurse Anesthetist, Certified Registered
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HOUSTON, TX 77030
Pathology (Dermatopathology)
1515 HOLCOMBE BLVD
HOUSTON, TX 77030
Nurse Anesthetist, Certified Registered
1515 HOLCOMBE BLVD, SUITE 300
HOUSTON, TX 77030
Pathology (Anatomic Pathology & Clinical Pathology)
1515 HOLCOMBE BLVD
HOUSTON, TX 77030
Internal Medicine (Hematology & Oncology)
1515 HOLCOMBE BLVD
HOUSTON, TX 77030
Dentist (Oral and Maxillofacial Surgery)
1515 HOLCOMBE BLVD
HOUSTON, TX 77030
Pathology (Anatomic Pathology & Clinical Pathology)
1515 HOLCOMBE BLVD
HOUSTON, TX 77030
Pathology (Anatomic Pathology & Clinical Pathology)
1515 HOLCOMBE BLVD
HOUSTON, TX 77030
Physician Assistant
1515 HOLCOMBE BLVD, MD ANDERSON CANCER CENTER - DEPARTMENT OF LEUKEMIA
HOUSTON, TX 77030
Physician Assistant
1515 HOLCOMBE BLVD
HOUSTON, TX 77030

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1265419832, enumerated as an "individual" on December 27, 2005.

The provider is located at 1515 HOLCOMBE BLVD HOUSTON, TX 77030 and the phone number is (713) 792-6161.

Internal Medicine with taxonomy code 207RG0300X and a focus in Geriatric Medicine.

The provider might be accepting Accepts: Blue Cross Blue Shield, Medicare and Medicaid. Please consult your insurance carrier or call the provider to verify.