Rebecca Wong Gregg, MD, MPH
Obstetrics & Gynecology Physician · Bethesda, MD
Rebecca Wong Gregg, MD, MPH is an obstetrics & gynecology physician with a practice address in Bethesda, Maryland, and NPI 1386278984, issued on Feb 24, 2020. Check the license on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Rebecca Wong Gregg
- Credential
- MD, MPH
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- 0101273866 VA
Self-reported in NPPES; status is on the state search - Practice location
- 8901 Rockville Pike, Bethesda, MD 20889
- Phone
- (301) 400-2140
- Enumerated
- Feb 24, 2020
- Record last updated
- Sep 3, 2025
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,034 in Maryland → Look up another NPI →
Also registered at 8901 Rockville Pike
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Rebecca Wong Gregg in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMaryland Board of PhysiciansCheck 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: $1,392.36
4 payments; by number, the most common kind was travel and lodging; the largest payer was Intuitive Surgical, Inc. The 21,429 providers of this specialty with any payment received $1,030.61 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.
Rebecca Wong Gregg among 1,034 obstetrics & gynecology physician records in Maryland
Rebecca Wong Gregg, MD, MPH is one of 1,034 obstetrics & gynecology physician records with a practice address in Maryland. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 93% of them.
- NPI issued2020 · 93% of these records are older, 4% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2025 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Obstetrics & Gynecology Physician providers in Maryland
There are 1,034 obstetrics & gynecology physician records in Maryland.
All 1,034 in Maryland → Every provider in Bethesda → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Jill Brown, M.D.Bethesda, MD 208891407831902
- Rebecca Chason, M.D.Bethesda, MD 208891477696003
- Christine Dorr, M.D.Bethesda, MD 208891871567123
- Susan Dunlow, M.D.Bethesda, MD 208891053384446
- William Haffner, M.D.Bethesda, MD 208891871594291
- Ernest Lockrow, DOBethesda, MD 208891043334808
- Michelle Lyons, M.D.Bethesda, MD 208891174724397
- Hugh Mackay, M.D.Bethesda, MD 208891346232261
Common questions
What is Rebecca Wong Gregg, MD, MPH's NPI number?
Rebecca Wong Gregg, MD, MPH's National Provider Identifier (NPI) is 1386278984, issued on Feb 24, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Rebecca Wong Gregg, MD, MPH located?
The NPPES record lists a practice address at 8901 Rockville Pike, Bethesda, MD, 20889. Phone: (301) 400-2140. Providers update this record themselves, so call before visiting.
How can I verify Rebecca Wong Gregg, MD, MPH's license?
Search the Maryland Board of Physicians at https://www.mbp.state.md.us/. 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.