Ryan L. Clark, D.O.
Emergency Medicine Physician · Springfield, MA
Ryan L. Clark, D.O. is an emergency medicine physician with a practice address in Springfield, Massachusetts, and NPI 1699160374, issued on Mar 31, 2015. Check the license (Massachusetts 273928, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Ryan L. Clark
- Credential
- D.O.
- Primary taxonomy
- Emergency Medicine Physician 207P00000X
- License number
- 273928 MA
Self-reported in NPPES; status is on the state search - Practice location
- 759 Chestnut Street, Springfield, MA 01107
- Phone
- (413) 794-3233
- Enumerated
- Mar 31, 2015
- Record last updated
- Jun 26, 2018 (not updated in 8 years: call before relying on the address or phone)
- Fax
- (413) 794-9060
- Medicare enrollment
- Enrolled (PECOS I20180508001636); accepts Medicare assignment
- Medical or professional school
- Philadelphia College Of Osteopathic Medicine, 2015
- Entity
- Type 1 · individual
8 nearest emergency medicine physician records → All 1,829 in Massachusetts → Look up another NPI →
Also registered at 759 Chestnut Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Peter Antkowiak, M.D.Emergency Medicine Physician1700249273
- Ines Ingrid Anton, NPFamily Nurse Practitioner1922301613
- Alicia Apostoles, RNPediatric Nurse Practitioner1780317792
- Inna Baraban, PA-CSurgical Physician Assistant1609326552
Verify Ryan L. Clark in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 273928Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average emergency medicine physician in 2024
35 Medicare Part D claims for 26 beneficiaries, against an average of 226 among the 54,106 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
- Baystate Medical Practices IncSpringfield, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ryan L. Clark among 1,829 emergency medicine physician records in Massachusetts
Ryan L. Clark, D.O. is one of 1,829 emergency medicine physician records with a practice address in Massachusetts. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2015, is newer than 70% of them.
- NPI issued2015 · 70% of these records are older, 27% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated2015 · median 2011 among the 1,200 with a school on file
- Record last updated2018 · 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 207P00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
123 emergency medicine physician records list a practice address in Springfield
They are 123 of the 8,553 NPPES records with a practice address in Springfield, and 1,829 emergency medicine physician records in Massachusetts.
All 1,829 in Massachusetts → Every provider in Springfield → Emergency Medicine Physician nationwide →
The 8 emergency medicine physician records with the nearest ZIP codes
- Vanna Albert, MDSpringfield, MA 011071548680952
- Rebecca Barron, M.D.Springfield, MA 011071811280027
- Seth Gemme, M.D.Springfield, MA 011071174883110
- Dersim Kaya, MDSpringfield, MA 011071780090654
- Agnieszka Nicora, MDSpringfield, MA 011071003080151
- Erica Ogle, D.O.Springfield, MA 011071962847459
- Matthew Opacic, MDSpringfield, MA 011071023285517
- Samir Patel, MDSpringfield, MA 011071659765105
Common questions
What is Ryan L. Clark, D.O.'s NPI number?
Ryan L. Clark, D.O.'s National Provider Identifier (NPI) is 1699160374, issued on Mar 31, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Ryan L. Clark, D.O. located?
The NPPES record lists a practice address at 759 Chestnut Street, Springfield, MA, 01107. Phone: (413) 794-3233. Providers update this record themselves, so call before visiting.
How can I verify Ryan L. Clark, D.O.'s license?
NPPES lists Massachusetts license number 273928, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Ryan L. Clark, D.O. prescribe under Medicare Part D?
In 2024, Ryan L. Clark, D.O. had 35 Medicare Part D claims for 26 beneficiaries; the average among emergency medicine physician prescribers was 226. 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.