Christina Ann Ryan, DO
Hematology & Oncology Physician · Bethesda, MD
Christina Ann Ryan, DO is a hematology & oncology physician with a practice address in Bethesda, Maryland, and NPI 1083271456, issued on May 21, 2019. Check the license on the Maryland Board of Physicians; the Medicare figures below come from public CMS files.
- Name
- Christina Ann Ryan
- Credential
- DO
- Primary taxonomy
- Hematology & Oncology Physician 207RH0003X
- License number
- 2023003810 MO
Self-reported in NPPES; status is on the state search - Practice location
- 4954 N Palmer RD, Bethesda, MD 20889
- Phone
- (301) 319-2100
- Enumerated
- May 21, 2019
- Record last updated
- Sep 10, 2024
- Entity
- Type 1 · individual
8 nearest hematology & oncology physician records → All 317 in Maryland → Look up another NPI →
Also registered at 4954 N Palmer RD
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Justin BoehmProsthetist1164963880
- Kyle Bruun, MDGeneral Practice Physician1013775469
- Brandis Charlot, DOInternal Medicine Physician1841859030
- Sarah Cole, M.D.Pediatric Hematology & Oncology Physician1194959353
- Robert Cook, CPOProsthetist1760191316
- Brenda Davis, CRNPFamily Nurse Practitioner1588065833
Verify Christina Ann Ryan 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: $216.54
8 payments; by number, the most common kind was food and beverage; the largest payer was Gilead Sciences, Inc. The 8,560 providers of this specialty with any payment received $7,481.41 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.
Christina Ann Ryan among 317 hematology & oncology physician records in Maryland
Christina Ann Ryan, DO is one of 317 hematology & oncology 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 2019, is newer than 93% of them.
- NPI issued2019 · 93% of these records are older, 5% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileNo · 58% of these records are
- Record last updated2024 · 57% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RH0003X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hematology & Oncology Physician providers in Maryland
There are 317 hematology & oncology physician records in Maryland.
All 317 in Maryland → Every provider in Bethesda → Hematology & Oncology Physician nationwide →
The 8 hematology & oncology physician records with the nearest ZIP codes
- Wendy Bernstein, MDBethesda, MD 208891679548432
- Gideon Blumenthal, M.D.Bethesda, MD 208891427242635
- Corey Carter, M.D.Bethesda, MD 208891831162833
- Alden Chiu, MDBethesda, MD 208891992894067
- James Driscoll, MDBethesda, MD 208891801081096
- J. Hamilton, M.D.Bethesda, MD 208891649386129
- Erin Larkins, MDBethesda, MD 208891386724532
- Dean Park, MDBethesda, MD 208891205983004
Common questions
What is Christina Ann Ryan, DO's NPI number?
Christina Ann Ryan, DO's National Provider Identifier (NPI) is 1083271456, issued on May 21, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Christina Ann Ryan, DO located?
The NPPES record lists a practice address at 4954 N Palmer RD, Bethesda, MD, 20889. Phone: (301) 319-2100. Providers update this record themselves, so call before visiting.
How can I verify Christina Ann Ryan, DO'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.