Recently Updated NPI Information — some details in this NPI profile have been updated in the NPI registry within the last 60 days.

DR. MARGARET MARY BREWINSKI ISAACS M.D., MPH
NPI 1801812201
Pediatrics in Silver Spring, MD

Q: What is Margaret Brewinski Isaacs's NPI number?

The NPI number for Margaret Brewinski Isaacs is 1801812201. It was assigned to this individual provider in the NPPES registry on July 15, 2006.

Q: What is Margaret Brewinski Isaacs's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Active since July 15, 2006PECOS Enrolled

10903 NEW HAMPSHIRE AVE, SILVER SPRING, MD 20993(888) 463-6332 Get Directions Write a Review

NPPES record last updated: July 16, 2026. Verified against the NPPES registry weekly; last sync: August 09, 2026.

Record update history: Jul 16, 2026, Apr 19, 2026 (2 updates tracked since 2026).

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About Dr. Margaret Mary Brewinski Isaacs M.d., Mph NPPES

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

DR. MARGARET MARY BREWINSKI ISAACS M.D., MPH (NPI 1801812201) is an individual pediatrics provider in Silver Spring, Maryland, licensed in Maryland (D64549) and active in the NPI registry since July 2006. She is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1801812201

Entity TypeIndividualFemale

Primary Taxonomy208000000X

Provider Legal NameDR. MARGARET MARY BREWINSKI ISAACSCredential: M.D., MPH

Location Address10903 NEW HAMPSHIRE AVESilver Spring, MD 20993-0002

Mailing Address10903 New Hampshire AveSilver Spring, MD 20993-0002

Phone(888) 463-6332

Sole ProprietorNo

Enumeration DateJuly 15, 2006

Last NPPES UpdateJuly 16, 20262 updates tracked since enumeration

NPPES CertifiedJuly 16, 2026

✔ NPI 1801812201 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses 2

★ Primary SpecialtyPediatricsAllopathic & Osteopathic Physicians

Taxonomy Code208000000X

License✔ Licensed in MD · D64549

Definition

A pediatrician is concerned with the physical, emotional and social health of children from birth to young adulthood. Care encompasses a broad spectrum of health services ranging from preventive healthcare to the diagnosis and treatment of acute and chronic diseases. A pediatrician deals with biological, social and environmental influences on the developing child, and with the impact of disease and dysfunction on development.

Also ListedPreventive Medicine · Public Health & General Preventive MedicineTaxonomy 2083P0901X · License D64549 (MD)

10903 NEW HAMPSHIRE AVE, Silver Spring, MD 20993

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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

✔

Enrolled in Medicare (PECOS)

Dr. Margaret Mary Brewinski Isaacs M.d., Mph is registered in the CMS Provider Enrollment, Chain and Ownership System (PECOS).

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.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20993 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

$100.31 typical visit price

range $65.18 – $194.86

Typical copayment $25.07 (range $16.29 – $48.71)

Most-billed visit code 99203

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.

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.

CHRISTINE QIAN GONG

Pharmacist

10903 NEW HAMPSHIRE AVE
SILVER SPRING, MD 20993

Montgomery County (888) 463-6332

TIFFANY KIM

Pharmacist

10903 NEW HAMPSHIRE AVE
SILVER SPRING, MD 20993

Montgomery County (410) 796-0078

MICHAEL A DIMYAN M.D.

Psychiatry & Neurology (Neurology)

10903 NEW HAMPSHIRE AVE
SILVER SPRING, MD 20993

Montgomery County (240) 402-8373

ELLIS FRANK UNGER M.D.

Internal Medicine (Cardiovascular Disease)

10903 NEW HAMPSHIRE AVE
SILVER SPRING, MD 20993

Montgomery County (301) 796-1157

LUCIA H LEE MD

Pediatrics (Pediatric Infectious Diseases)

10903 NEW HAMPSHIRE AVE
SILVER SPRING, MD 20993

Montgomery County (301) 796-2640

SHIN-YE CHANG PHARMD

Pharmacist

10903 NEW HAMPSHIRE AVE, WO22 RM4134
SILVER SPRING, MD 20993

Montgomery County (301) 796-3971

ASHLEY BURNS PHARM.D.

Pharmacist

10903 NEW HAMPSHIRE AVE, FOOD AND DRUG ADMINISTRATION
SILVER SPRING, MD 20993

Montgomery County (240) 402-7111

EDWIGE YMELE CHIOGO VOUFFO

Pharmacist (Pharmacotherapy)

10903 NEW HAMPSHIRE AVE
SILVER SPRING, MD 20993

Montgomery County (240) 706-1008

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 Brewinski Isaacs's NPI number?

The NPI number for Margaret Brewinski Isaacs is 1801812201. It was assigned to this individual provider in the NPPES registry on July 15, 2006.

Where is Margaret Brewinski Isaacs located?

Margaret Brewinski Isaacs practices at 10903 New Hampshire Ave, Silver Spring, MD 20993. The listed phone number is (888) 463-6332.

What is Margaret Brewinski Isaacs's specialty?

The primary specialty registered for this NPI is Pediatrics with taxonomy code 208000000X.

Is Margaret Brewinski Isaacs enrolled in Medicare?

Yes. Margaret Brewinski Isaacs is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Margaret Brewinski Isaacs was last updated on July 16, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 32 days 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.