Abigail Bisom Ritter, MD
Hospitalist Physician · New York, NY
Abigail Bisom Ritter, MD is a hospitalist physician with a practice address in New York, New York, and NPI 1437778644, issued on Apr 9, 2020. Check the license (New York 321123, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Abigail Bisom Ritter
- Credential
- MD
- Primary taxonomy
- Hospitalist Physician 208M00000X
- License number
- 321123 NY
Self-reported in NPPES; status is on the state search - Practice location
- 622 W 168TH St, New York, NY 10032
- Phone
- (212) 305-6354
- Enumerated
- Apr 9, 2020
- Record last updated
- Apr 28, 2023
- Medicare enrollment
- Enrolled (PECOS I20230518002868); accepts Medicare assignment
- Medical or professional school
- University Of Rochester School Of Medicine And Dentistry, 2020
- Entity
- Type 1 · individual
8 nearest hospitalist physician records → All 2,067 in New York → Look up another NPI →
Also registered at 622 W 168TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Marwah Abdalla, M.D.Cardiovascular Disease Physician1437201415
- Shauna Abdouche, MDStudent in an Organized Health Care Education/Training Program1316400484
- Irum AbdullahStudent in an Organized Health Care Education/Training Program1366307555
- Samantha Abel, PA-CPhysician Assistant1619485018
- Alvin AbellaAcute Care Nurse Practitioner1588068233
- Abenezer AberaStudent in an Organized Health Care Education/Training Program1386348340
Verify Abigail Bisom Ritter in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 321123Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
91% fewer Medicare Part D claims than the average hospitalist physician in 2024
47 Medicare Part D claims for 26 beneficiaries, against an average of 521 among the 21,613 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Trustees OF Columbia University IN The City OF New YorkNew York, NY
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Abigail Bisom Ritter among 2,067 hospitalist physician records in New York
Abigail Bisom Ritter, MD is one of 2,067 hospitalist physician records with a practice address in New York. 93% 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 75% of them.
- NPI issued2020 · 75% of these records are older, 17% newer
- In a Medicare fileYes · 93% of these records are
- In the CMS Doctors and Clinicians fileYes · 83% of these records are
- Graduated2020 · median 2013 among the 1,716 with a school on file
- Record last updated2023 · 37% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 208M00000X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Hospitalist Physician providers in New York
There are 2,067 hospitalist physician records in New York.
All 2,067 in New York → Every provider in New York → Hospitalist Physician nationwide →
The 8 hospitalist physician records with the nearest ZIP codes
- Domenico Accili, M.D.New York, NY 100321003938796
- Jason Adelman, M.D.New York, NY 100321114129400
- Katrina Armstrong, MDNew York, NY 100321275563330
- Charles Baillie, MDNew York, NY 100321306909940
- John Brust, MDNew York, NY 100321841309770
- Joyeeta Dastidar, MDNew York, NY 100321235352337
- Michael Goldberg, M.D.New York, NY 100321215034673
- Adrian Gonzalez, M.D.New York, NY 100321487751467
Common questions
What is Abigail Bisom Ritter, MD's NPI number?
Abigail Bisom Ritter, MD's National Provider Identifier (NPI) is 1437778644, issued on Apr 9, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Abigail Bisom Ritter, MD located?
The NPPES record lists a practice address at 622 W 168TH St, New York, NY, 10032. Phone: (212) 305-6354. Providers update this record themselves, so call before visiting.
How can I verify Abigail Bisom Ritter, MD's license?
NPPES lists New York license number 321123, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Abigail Bisom Ritter, MD prescribe under Medicare Part D?
In 2024, Abigail Bisom Ritter, MD had 47 Medicare Part D claims for 26 beneficiaries; the average among hospitalist physician prescribers was 521. Part D covers Medicare prescriptions only.
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.