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DR. MARGARET RYAN MARKHAM M.D.
NPI 1770803967
Obstetrics & Gynecology in Houston, TX

Active since June 10, 2010PECOS EnrolledAccepts Medicare Assignment
7400 FANNIN ST, SUITE 1050, HOUSTON, TX 77054(713) 795-1000(713) 795-1011 Get Directions Write a Review

NPPES record last updated: January 26, 2022. Verified against the NPPES registry weekly; last sync: August 16, 2026.

About Dr. Margaret Ryan Markham M.d. NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

DR. MARGARET RYAN MARKHAM M.D. (NPI 1770803967) is an individual obstetrics & gynecology provider in Houston, Texas, licensed in Texas (P9903) and active in the NPI registry since June 2010. She is enrolled in Medicare PECOS, is affiliated with University Of Texas Medical Branch Galveston, and is a graduate of Other (2010).

NPPES Registry Identity

NPI1770803967
Entity TypeIndividualFemale
Primary Taxonomy207V00000X
Provider Legal NameDR. MARGARET RYAN MARKHAMCredential: M.D.
Location Address7400 FANNIN ST, SUITE 1050Houston, TX 77054-1920
Mailing Address7400 Fannin St, Suite 1050Houston, TX 77054-1920 · (713) 795-1000 · Fax (713) 795-1011
Phone(713) 795-1000
Fax(713) 795-1011
Sole ProprietorNo
Medical School CMSOtherGraduated 2010
Enumeration DateJune 10, 2010
Last NPPES UpdateJanuary 26, 2022
✔ NPI 1770803967 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & GynecologyAllopathic & Osteopathic Physicians
Taxonomy Code207V00000X
License✔ Licensed in TX · P9903
Definition
An obstetrician/gynecologist possesses special knowledge, skills and professional capability in the medical and surgical care of the female reproductive system and associated disorders. This physician serves as a consultant to other physicians and as a primary physician for women.
7400 FANNIN ST, Houston, TX 77054
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Accepted Insurance

The full list of accepted plans is on the Insurance tab. Issuers include Ambetter from Superior HealthPlan, Ambetter Health, Blue Cross and Blue Shield of Texas and more.Insurance ›

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, and ordering and referring status from the CMS PECOS system.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Dr. Margaret Ryan Markham M.d. is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID7810217882
PECOS Enrollment IDI20150515000631
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Areas of Expertise CMS Part B claims 4

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Cervical or vaginal cancer screening; pelvic and clinical breast examination G0101
This procedure involves checking for health issues in the lower abdomen and chest area. It helps identify early signs of certain conditions, increasing the chance for successful treatment. It's a routine check-up that's important for maintaining good health.
81 services81 patients
Screening papanicolaou smear; obtaining, preparing and conveyance of cervical or vaginal smear to laboratory Q0091
A Papanicolaou smear, often called a Pap smear, is a test to check for changes in cells. A small sample is gently collected from the lower region and sent to a lab for examination. This helps in early detection of potential health issues.
42 services42 patients
Established patient office or other outpatient visit with low level od decision making, if using time, 20 minutes or more 99213
This is a routine visit for patients who have already been seen by the healthcare provider. During this approximately 20-29 minute appointment, your health status will be evaluated and any necessary treatments or tests will be discussed. It's a chance to address any health concerns you may have.
25 services23 patients
Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more 99214
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.
21 services18 patients

Hospital Affiliations CMS Care Compare 5

Hospitals where this provider delivers care, identified from recent Medicare claims and place-of-service records.

University Of Texas Medical Branch Galveston

Acute Care Hospitals · Galveston, TX
3/5 CMS rating
OwnershipGovernment - State
CMS Certification Number450018
Location301 University BoulevardGalveston, TX 77555 · Galveston County
Emergency services Birthing friendly

Houston Methodist Hospital

Acute Care Hospitals · Houston, TX
5/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450358
Location6565 FanninHouston, TX 77030 · Harris County
Emergency services Birthing friendly

Womans Hospital Of Texas,the

Acute Care Hospitals · Houston, TX
3/5 CMS rating
OwnershipProprietary
CMS Certification Number450674
Location7600 FanninHouston, TX 77054 · Harris County
Emergency services Birthing friendly

Houston Methodist Sugarland Hospital

Acute Care Hospitals · Sugar Land, TX
4/5 CMS rating
OwnershipVoluntary non-profit - Private
CMS Certification Number450820
Location16655 Southwest FreewaySugar Land, TX 77479 · Fort Bend County
Emergency services Birthing friendly

Hca Houston Healthcare Pearland

Acute Care Hospitals · Pearland, TX
3/5 CMS rating
OwnershipProprietary
CMS Certification Number670106
Location11100 Shadow Creek ParkwayPearland, TX 77584 · Brazoria County
Emergency services

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 77054 ZIP code area, from fee-for-service claims. These are area statistics, not this provider’s prices; actual charges vary by service and coverage.

New Patient
$134.06 typical visit price
range $58.24 – $176.98
Typical copayment $33.51 (range $14.56 – $44.24)
Most-billed visit code 99204
Established Patient
$72.62 typical visit price
range $18.60 – $143.93
Typical copayment $18.15 (range $4.65 – $35.98)
Most-billed visit code 99213
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

BERNARD ROSENFELD MD. PA
Obstetrics & Gynecology
7400 FANNIN ST, STE 910
HOUSTON, TX 77054
Harris County (713) 790-0099
TEXAS INSTITUTE FOR REPRODUCTIVE MEDICINE & ENDOCRINOLOGY PA
Internal Medicine (Endocrinology, Diabetes & Metabolism)
7400 FANNIN ST, STE 850
HOUSTON, TX 77054
Harris County (713) 791-1874
DR. BERNARD L. ROSENFELD M.D., PH.D.
Obstetrics & Gynecology
7400 FANNIN ST, SUITE 970
HOUSTON, TX 77054
Harris County (713) 790-0099
CENTER FOR MEDICAL GENETICS, PLLC
Clinical Medical Laboratory
7400 FANNIN ST, SUITE 700
HOUSTON, TX 77054
Harris County (713) 790-1990
DR. ELLIOTT RUSSELL WEIDMAN MD
Internal Medicine (Endocrinology, Diabetes & Metabolism)
7400 FANNIN ST, SUITE 850
HOUSTON, TX 77054
Harris County (713) 791-1874
DR. ALAGAPPAN ALAGAPPAN M.D.
Pediatrics (Neonatal-Perinatal Medicine)
7400 FANNIN ST, SUITE 810
HOUSTON, TX 77054
Harris County (713) 512-8500
PRIMARY HEALTH NETWORK OF SOUTH TEXAS
Obstetrics & Gynecology
7400 FANNIN ST, SUITE 1160
HOUSTON, TX 77054
Harris County (713) 799-8994
LINDA EGAN
Physician Assistant
7400 FANNIN ST, SUITE 1050
HOUSTON, TX 77054
Harris County (713) 795-1000

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Margaret Markham's NPI number?

The NPI number for Margaret Markham is 1770803967. It was assigned to this individual provider in the NPPES registry on June 10, 2010.

Where is Margaret Markham located?

Margaret Markham practices at 7400 Fannin St Suite 1050, Houston, TX 77054. The listed phone number is (713) 795-1000.

What is Margaret Markham's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology with taxonomy code 207V00000X.

Is Margaret Markham enrolled in Medicare?

Yes. Margaret Markham is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

What insurance does Margaret Markham accept?

Health plans from Ambetter Health, Ambetter from Superior HealthPlan, Blue Cross and Blue Shield of Texas, Community Health Choice and Imperial Insurance Companies, Inc. and 1 other insurer list Margaret Markham as in-network in at least one marketplace plan. Coverage varies by plan and year; verify with the insurer or the provider before a visit.

Is Margaret Markham affiliated with any hospitals?

According to CMS data, Margaret Markham is affiliated with University Of Texas Medical Branch Galveston, Houston Methodist Hospital, Womans Hospital Of Texas,the, Houston Methodist Sugarland Hospital and Hca Houston Healthcare Pearland.

When was this NPI record last updated?

The NPPES record for Margaret Markham was last updated on January 26, 2022. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 4 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.