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MARGARET NADIA ALEXANDER MD
NPI 1912176512
Obstetrics & Gynecology - Gynecologic Oncology in Bethesda, MD

Active since February 27, 2008PECOS EnrolledAccepts Medicare Assignment
9100 OLD GEORGETOWN RD, BETHESDA, MD 20814(301) 564-4966(301) 564-9356 Get Directions Write a Review

NPPES record last updated: September 11, 2014. Verified against the NPPES registry weekly; last sync: October 18, 2026.

About Margaret Nadia Alexander Md NPPES

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

MARGARET NADIA ALEXANDER MD (NPI 1912176512) is an individual gynecologic oncology provider in Bethesda, Maryland, licensed in Maryland (D0051774) and active in the NPI registry since February 2008. She is enrolled in Medicare PECOS and is a graduate of Yale University School Of Medicine (1986).

NPPES Registry Identity

NPI1912176512
Entity TypeIndividualFemale
Primary Taxonomy207VX0201X
Provider Legal NameMARGARET NADIA ALEXANDERCredential: MD
Location Address9100 OLD GEORGETOWN RDBethesda, MD 20814-1617
Mailing AddressPo Box 34152Bethesda, MD 20827-0152 · (301) 564-4966 · Fax (301) 564-9356
Phone(301) 564-4966
Fax(301) 564-9356
Sole ProprietorYes
Medical School CMSYale University School Of MedicineGraduated 1986
Enumeration DateFebruary 27, 2008
Last NPPES UpdateSeptember 11, 2014
✔ NPI 1912176512 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyObstetrics & Gynecology · Gynecologic OncologyAllopathic & Osteopathic Physicians
Taxonomy Code207VX0201X
License✔ Licensed in MD · D0051774
Definition
An obstetrician/gynecologist who provides consultation and comprehensive management of patients with gynecologic cancer, including those diagnostic and therapeutic procedures necessary for the total care of the patient with gynecologic cancer and resulting complications.
9100 OLD GEORGETOWN RD, Bethesda, MD 20814
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Other Names 1

Professional Name (2)Dr. Margaret Nadia Alexander Md

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Margaret Nadia Alexander Md 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 ID7315119799
PECOS Enrollment IDI20111006000520
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.

Medicare Billing Reassignment

Medicare enrollment records show Margaret Alexander reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Margaret N Alexander MD PC
Same address
Surgery
9100 OLD GEORGETOWN ROAD
Bethesda, MD 20814
  • Reassigned Medicare billing, District of Columbia enrollment
NPI 1295811933 (301) 564-4966

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

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.

Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more 99215
This service involves a follow-up appointment for existing patients, lasting between 40 to 54 minutes. During this time, your healthcare provider will assess your current health status, discuss any changes or concerns, review your treatment plan, and answer any questions you may have.
37 services25 patients
Annual depression screening, 5 to 15 minutes G0444
An annual depression screening is a short, routine evaluation to check for signs of depression. It involves answering a series of questions about your feelings, thoughts, and behaviors. The process takes about 15 minutes and helps detect depression early for better management.
22 services22 patients
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.
16 services16 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.
16 services16 patients

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20814 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
$194.86 typical visit price
range $65.18 – $194.86
Typical copayment $48.71 (range $16.29 – $48.71)
Most-billed visit code 99205
Established Patient
$113.72 typical visit price
range $21.40 – $158.88
Typical copayment $28.43 (range $5.35 – $39.72)
Most-billed visit code 99214
Amounts reflect what Medicare beneficiaries in this ZIP area are typically charged for office visits. Patients with other coverage should check their individual plans.

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 Alexander's NPI number?

The NPI number for Margaret Alexander is 1912176512. It was assigned to this individual provider in the NPPES registry on February 27, 2008. The provider is also known as Dr. Margaret Nadia Alexander MD.

Where is Margaret Alexander located?

Margaret Alexander practices at 9100 Old Georgetown Rd, Bethesda, MD 20814. The listed phone number is (301) 564-4966.

What is Margaret Alexander's specialty?

The primary specialty registered for this NPI is Obstetrics & Gynecology, specializing in Gynecologic Oncology, with taxonomy code 207VX0201X.

Is Margaret Alexander enrolled in Medicare?

Yes. Margaret Alexander 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.

Which organization bills Medicare for Margaret Alexander's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Margaret Alexander reassigns Medicare benefits to Margaret N Alexander MD PC (Bethesda, MD). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Margaret Alexander's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Margaret Alexander was last updated on September 11, 2014. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 12 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.