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DR. CHARLOTTE GRINBERG MD
NPI 1750811204
Internal Medicine in Chevy Chase, MD

Active since June 18, 2017Opted out of Medicare · through Jan 7, 2028
5454 WISCONSIN AVE STE 635, CHEVY CHASE, MD 20815(301) 857-9225(301) 842-9434 Get Directions Write a Review

NPPES record last updated: May 19, 2026. Verified against the NPPES registry weekly; last sync: September 13, 2026.

Record update history: May 19, 2026, Dec 17, 2025, Jun 18, 2017 (3 updates tracked since 2017).

About Dr. Charlotte Grinberg Md NPPES

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

DR. CHARLOTTE GRINBERG MD (NPI 1750811204) is an individual internal medicine provider in Chevy Chase, Maryland, licensed in Maryland (D97034) and active in the NPI registry since June 2017. She has opted out of Medicare through January 7, 2028 and remains eligible to order and refer.

NPPES Registry Identity

NPI1750811204
Entity TypeIndividualFemale
Primary Taxonomy207R00000X
Provider Legal NameDR. CHARLOTTE GRINBERGCredential: MD
Location Address5454 WISCONSIN AVE STE 635Chevy Chase, MD 20815-6926
Mailing Address5454 Wisconsin Ave Ste 635Chevy Chase, MD 20815-6926 · (301) 857-9225 · Fax (301) 842-9434
Phone(301) 857-9225
Fax(301) 842-9434
Sole ProprietorNo
Enumeration DateJune 18, 2017
Last NPPES UpdateMay 19, 20263 updates tracked since enumeration
NPPES CertifiedMay 19, 2026
✔ NPI 1750811204 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyInternal MedicineAllopathic & Osteopathic Physicians
Taxonomy Code207R00000X
License✔ Licensed in MD · D97034
Definition
A physician who provides long-term, comprehensive care in the office and the hospital, managing both common and complex illness of adolescents, adults and the elderly. Internists are trained in the diagnosis and treatment of cancer, infections and diseases affecting the heart, blood, kidneys, joints and digestive, respiratory and vascular systems. They are also trained in the essentials of primary care internal medicine, which incorporates an understanding of disease prevention, wellness, substance abuse, mental health and effective treatment of common problems of the eyes, ears, skin, nervous system and reproductive organs.
5454 WISCONSIN AVE STE 635, Chevy Chase, MD 20815
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Medicare Participation & PECOS CMS

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

Medicare Enrollment Status

ⓘ

Opted out of Medicare

Dr. Charlotte Grinberg Md has filed a Medicare opt-out affidavit. Services are provided under private contract between the provider and the patient, and are not billed to or reimbursed by Medicare. The opt-out is on file from January 7, 2026 through January 7, 2028.

Opt-Out Effective DateJanuary 7, 2026
Opt-Out In Effect ThroughJanuary 7, 2028Opt-out affidavits renew automatically every two years unless cancelled
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesAn opted-out provider can still order and refer for Medicare patients in the categories marked above, even though their own services are not covered.

Physician Visit Costs CMS claims · ZIP area

Typical Medicare office-visit costs in the 20815 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
$147.85 typical visit price
range $65.18 – $194.86
Typical copayment $36.96 (range $16.29 – $48.71)
Most-billed visit code 99204
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 Charlotte Grinberg's NPI number?

The NPI number for Charlotte Grinberg is 1750811204. It was assigned to this individual provider in the NPPES registry on June 18, 2017.

Where is Charlotte Grinberg located?

Charlotte Grinberg practices at 5454 Wisconsin Ave Ste 635, Chevy Chase, MD 20815. The listed phone number is (301) 857-9225.

What is Charlotte Grinberg's specialty?

The primary specialty registered for this NPI is Internal Medicine with taxonomy code 207R00000X.

Is Charlotte Grinberg enrolled in Medicare?

No. Charlotte Grinberg has opted out of Medicare through January 7, 2028. Care is provided under private contracts, and Medicare does not pay for services furnished by providers who have opted out. The provider remains eligible to order and refer services for Medicare patients.

When was this NPI record last updated?

The NPPES record for Charlotte Grinberg was last updated on May 19, 2026. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 3 months 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.