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

DR. ROBERT JOSEPH STILLMAN M.D.
NPI 1548255359
Specialist in Rockville, MD

Q: What is Robert Stillman's NPI number?

The NPI number for Robert Stillman is 1548255359. It was assigned to this individual provider in the NPPES registry on September 19, 2005.

Q: What is Robert Stillman's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Q: When was this NPI record last updated?

The NPPES record for Robert Stillman was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 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.

Active since September 19, 2005PECOS Enrolled

15001 SHADY GROVE RD, SUITE 400, ROCKVILLE, MD 20850(301) 340-1188(301) 340-1612 Get Directions Write a Review

NPPES record last updated: July 13, 2026. Verified against the NPPES registry weekly; last sync: August 02, 2026.

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About Dr. Robert Joseph Stillman M.d. NPPES

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

DR. ROBERT JOSEPH STILLMAN M.D. (NPI 1548255359) is an individual specialist in Rockville, Maryland, licensed in Maryland (D45713) and active in the NPI registry since September 2005. He is enrolled in Medicare PECOS.

NPPES Registry Identity

NPI1548255359

Entity TypeIndividualMale

Primary Taxonomy174400000X

Provider Legal NameDR. ROBERT JOSEPH STILLMANCredential: M.D.

Location Address15001 SHADY GROVE RD, SUITE 400Rockville, MD 20850-6352

Mailing Address15001 Shady Grove Rd, Suite 340Rockville, MD 20850-6352 · (301) 340-1188 · Fax (301) 340-6478

Phone(301) 340-1188

Fax(301) 340-1612

Sole ProprietorNo

Enumeration DateSeptember 19, 2005

Last NPPES UpdateJuly 13, 2026

✔ NPI 1548255359 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtySpecialistOther Service Providers

Taxonomy Code174400000X

License✔ Licensed in MD · D45713

Definition

An individual educated and trained in an applied knowledge discipline used in the performance of work at a level requiring knowledge and skills beyond or apart from that provided by a general education or liberal arts degree.

15001 SHADY GROVE RD, Rockville, MD 20850

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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. Robert Joseph Stillman M.d. 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.

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.

STEVEN J. ZITO CRNA

Nurse Anesthetist, Certified Registered

15001 SHADY GROVE RD
ROCKVILLE, MD 20850

Montgomery County (301) 340-7141

MARGARET ANN CONNORS CRNP

Nurse Practitioner (Obstetrics & Gynecology)

15001 SHADY GROVE RD, SUITE 220
ROCKVILLE, MD 20850

Montgomery County (301) 545-1288

SANDMAN, LLC

Anesthesiology

15001 SHADY GROVE RD
ROCKVILLE, MD 20850

Montgomery County (301) 494-3000

PATRICIA SACHS MSW

Counselor (Mental Health)

15001 SHADY GROVE RD, SUITE 220
ROCKVILLE, MD 20850

Montgomery County (301) 951-0206

JEANNE E O'BRIEN M.D.

Obstetrics & Gynecology (Reproductive Endocrinology)

15001 SHADY GROVE RD, SUITE 400
ROCKVILLE, MD 20850

Montgomery County (301) 340-1188

SHADY GROVE CHILDREN'S GAD, LLC

Anesthesiology

15001 SHADY GROVE RD
ROCKVILLE, MD 20850

Montgomery County (301) 307-3333

SHADY GROVE CENTER FOR PREIMPLANTATION GENETICS

Clinical Medical Laboratory

15001 SHADY GROVE RD, SUITE 220
ROCKVILLE, MD 20850

Montgomery County (301) 340-1188

LABORATORY CORPORATION OF AMERICA HOLDINGS

Clinical Medical Laboratory

15001 SHADY GROVE RD, STE 220
ROCKVILLE, MD 20850

Montgomery County (301) 545-1354

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 Robert Stillman's NPI number?

The NPI number for Robert Stillman is 1548255359. It was assigned to this individual provider in the NPPES registry on September 19, 2005.

Where is Robert Stillman located?

Robert Stillman practices at 15001 Shady Grove Rd Suite 400, Rockville, MD 20850. The listed phone number is (301) 340-1188.

What is Robert Stillman's specialty?

The primary specialty registered for this NPI is Specialist with taxonomy code 174400000X.

Is Robert Stillman enrolled in Medicare?

Yes. Robert Stillman is registered in the Medicare PECOS enrollment system.

When was this NPI record last updated?

The NPPES record for Robert Stillman was last updated on July 13, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 24 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.