MARYAM ZAFER MD
NPI 1659864866
Internal Medicine - Hepatology in Houston, TX

NPI Status: Active since June 12, 2018

Contact Information

6620 MAIN ST STE 1450
HOUSTON, TX
ZIP 77030
Phone: (713) 798-1716

Get Directions Write a Review

  • Individual
  • Female
  • Years of Experience 8
  • Internal Medicine
  • Hepatology
  • Accepts Medicare Approved Payment
  • PECOS Enrolled

About MARYAM ZAFER

This page provides the complete NPI Profile along with additional information for Maryam Zafer, an internist established in Houston, Texas with a medical specialization in Internal Medicine, focusing in hepatology and more than 8 years of experience. The healthcare provider is registered in the NPI registry with number 1659864866 assigned on June 2018. The practitioner's primary taxonomy code is 207RI0008X with license number V9180 (TX). The provider is registered as an individual and her NPI record was last updated February 2026.

NPI
1659864866
Provider Name
MARYAM ZAFER MD
Gender
Female
Entity Type
Individual
Location Address
6620 MAIN ST STE 1450 HOUSTON, TX 77030
Location Phone
(713) 798-1716
Mailing Address
6620 MAIN ST STE 1450 HOUSTON, TX 77030
Mailing Phone
(832) 355-1400
Medical School Name
OTHER
Graduation Year
2018
Is Sole Proprietor?
No
Enumeration Date
06-12-2018
Last Update Date
02-12-2026
Code Navigator

An internist like Maryam Zafer 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 Hepatology

Taxonomy Code
207RI0008X
Type
Allopathic & Osteopathic Physicians
License No.
V9180
License State
TX
Taxonomy Description
The discipline of Hepatology encompasses the structure, function, and diseases of the liver and biliary tract. The American Board of Internal Medicine considers Hepatology part of the subspecialty of gastroenterology. Physicians who identify themselves as Hepatologists usually, but not always, have been trained in gastrointestinal programs.

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

125071980 (IL)
2207RG0100XAllopathic & Osteopathic Physicians

Internal Medicine
Gastroenterology

V9180 (TX)

Medicare Participation & PECOS Enrollment Status

Maryam Zafer 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.

Maryam Zafer 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: 4688928039

    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: I20250731004806

    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-Oxygen and Supplies (DC002N)

    Oxygen concentrator, single delivery port, capable of delivering 85 percent or greater oxygen concentration at the prescribed flow rate (HCPCS:E1390)

    3 DME suppliers used 15 Medicare Claims 15 Services Paid

  • DME-Oxygen and Supplies (DC000N)

    Portable gaseous oxygen system, rental; home compressor used to fill portable oxygen cylinders; includes portable containers, regulator, flowmeter, humidifier, cannula or mask, and tubing (HCPCS:K0738)

    1 DME suppliers used 12 Medicare Claims 12 Services Paid

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. Maryam Zafer is affiliated with the following medical facilities:

Hospital Name Address Phone Hospital Type Overall Rating
CHI ST LUKE'S HEALTH BAYLOR COLLEGE OF MEDICINE ME6720 BERTNER AVE, STE MC1-266
HOUSTON, TX 77030
(832) 355-1000Acute Care Hospitals

Reviews for MARYAM ZAFER MD

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 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 1659864866, we treat the final digit (6) 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 74. The final step is to find the difference between that total and the next multiple of ten (80 - 74 = 6).

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
6
Unchanged
Pos 3
5
Doubled → 10 → 1 + 0
Pos 4
9
Unchanged
Pos 5
8
Doubled → 16 → 1 + 6
Pos 6
6
Unchanged
Pos 7
4
Doubled → 8
Pos 8
8
Unchanged
Pos 9
6
Doubled → 12 → 1 + 2
Check
6
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 5 → 10 → 1 8 → 16 → 7 4 → 8 6 → 12 → 3

Step 2: Add all digits plus the NPI constant

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

2 + 6 + 1 + 0 + 9 + 1 + 6 + 6 + 8 + 8 + 1 + 2 + 24 = 74

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

The next multiple of ten after 74 is 80. The difference is the calculated check digit.

80 - 74 = 6
This NPI is valid
The calculated check digit is 6, which matches the last digit of 1659864866.

Other Providers at the Same Location


The following 15 providers are registered at the same or a nearby location.

Nurse Practitioner (Family)
6620 MAIN ST STE 1450
HOUSTON, TX 77030
Clinic/Center (Medical Specialty)
6620 MAIN ST STE 1450
HOUSTON, TX 77030
Nurse Practitioner (Family)
6620 MAIN ST STE 1450
HOUSTON, TX 77030
Internal Medicine (Transplant Hepatology)
6620 MAIN ST STE 1450
HOUSTON, TX 77030
Nurse Practitioner (Acute Care)
6620 MAIN ST STE 1450
HOUSTON, TX 77030
Transplant Surgery
6620 MAIN ST STE 1450
HOUSTON, TX 77030
Nurse Practitioner (Acute Care)
6620 MAIN ST STE 1450
HOUSTON, TX 77030
Nurse Practitioner
6620 MAIN ST STE 1450
HOUSTON, TX 77030
Nurse Practitioner (Acute Care)
6620 MAIN ST STE 1450
HOUSTON, TX 77030
Internal Medicine (Hepatology)
6620 MAIN ST STE 1450
HOUSTON, TX 77030
Internal Medicine (Gastroenterology)
6620 MAIN ST STE 1450
HOUSTON, TX 77030
Nurse Practitioner (Family)
6620 MAIN ST STE 1450
HOUSTON, TX 77030
Internal Medicine (Transplant Hepatology)
6620 MAIN ST STE 1450
HOUSTON, TX 77030
Nurse Practitioner (Family)
6620 MAIN ST STE 1450
HOUSTON, TX 77030
Nurse Practitioner (Acute Care)
6620 MAIN ST STE 1450
HOUSTON, TX 77030

Frequently Asked Questions

The NPI number assigned to this healthcare provider is 1659864866, enumerated as an "individual" on June 12, 2018.

The provider is located at 6620 MAIN ST STE 1450 HOUSTON, TX 77030 and the phone number is (713) 798-1716.

Internal Medicine with taxonomy code 207RI0008X and a focus in Hepatology.

Maryam Zafer is affiliated with: CHI ST LUKE'S HEALTH BAYLOR COLLEGE OF MEDICINE ME.