Gladys Sloane Zimmerman, MD
Pediatric Gastroenterology Physician · Washington, DC
Gladys Sloane Zimmerman, MD is a pediatric gastroenterology physician with a practice address in Washington, District of Columbia, and NPI 1669979209, issued on Apr 10, 2018. Check the license (District of Columbia MD500003089, as entered in NPPES) on the District of Columbia Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Gladys Sloane Zimmerman
- Credential
- MD
- Primary taxonomy
- Pediatric Gastroenterology Physician 2080P0206X
- License number
- MD500003089 DC
Self-reported in NPPES; status is on the state search - Practice location
- 111 Michigan Ave NW, Washington, DC 20010
- Phone
- (202) 476-5000
- Enumerated
- Apr 10, 2018
- Record last updated
- Nov 6, 2024
- Medicare enrollment
- Enrolled (PECOS I20250218003723); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest pediatric gastroenterology physician records → All 28 in District of Columbia → Look up another NPI →
Also registered at 111 Michigan Ave NW
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Joseph AbbahPharmacist1790313948
- Emily Abbey, CRNPCritical Care Pediatric Nurse Practitioner1710434006
- Claude Abdallah, MDPediatric Anesthesiology Physician1053401851
- Islam Abdelmoeti, MBBCHDiagnostic Radiology Physician1588348155
- Sarah Abi Raad, MDPediatric Cardiology Physician1528798287
- Hassan Aboughalia, MBBCH, MDDiagnostic Radiology Physician1710473954
Verify Gladys Sloane Zimmerman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersDistrict of Columbia Board of Medicine
Search for license MD500003089Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Industry payments in 2024: $18.74
1 payment: food and beverage; the largest payer was Takeda Pharmaceuticals U.S.A., Inc. The 1,184 providers of this specialty with any payment received $2,585.05 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Children's HospitalWashington, DC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gladys Sloane Zimmerman among 28 pediatric gastroenterology physician records in District of Columbia
Gladys Sloane Zimmerman, MD is one of 28 pediatric gastroenterology physician records with a practice address in District of Columbia. 54% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2018, is newer than 86% of them.
- NPI issued2018 · 86% of these records are older, 11% newer
- In a Medicare fileYes · 54% of these records are
- In the CMS Doctors and Clinicians fileYes · 14% of these records are
- Record last updated2024 · 75% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0206X and a District of Columbia practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Pediatric Gastroenterology Physician providers in District of Columbia
There are 28 pediatric gastroenterology physician records in District of Columbia.
All 28 in District of Columbia → Every provider in Washington → Pediatric Gastroenterology Physician nationwide →
The 8 pediatric gastroenterology physician records with the nearest ZIP codes
- Vahe Badalyan, MDWashington, DC 200101902073273
- Ali Bader, MDWashington, DC 200101427123538
- Geetanjali Bora, M.DWashington, DC 200101376995720
- Laurie Conklin, M.D.Washington, DC 200101811034911
- Christine Kelly, PNPWashington, DC 200101427118702
- Benny Kerzner, MDWashington, DC 200101720160187
- Matthew Kowalik, MDWashington, DC 200101477895290
- Ian Leibowitz, M.D.Washington, DC 200101225004815
Common questions
What is Gladys Sloane Zimmerman, MD's NPI number?
Gladys Sloane Zimmerman, MD's National Provider Identifier (NPI) is 1669979209, issued on Apr 10, 2018. An NPI identifies a provider in billing; it is not a license.
Where is Gladys Sloane Zimmerman, MD located?
The NPPES record lists a practice address at 111 Michigan Ave NW, Washington, DC, 20010. Phone: (202) 476-5000. Providers update this record themselves, so call before visiting.
How can I verify Gladys Sloane Zimmerman, MD's license?
NPPES lists District of Columbia license number MD500003089, as entered by the provider. Search the District of Columbia Board of Medicine at https://dchealth.dc.gov/bomed. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.