Casey Callahan, MD
Family Medicine Physician · Somerville, MA
Casey Callahan, MD is a family medicine physician with a practice address in Somerville, Massachusetts, and NPI 1225657919, issued on Apr 13, 2020. Check the license on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Casey Callahan
- Credential
- MD
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- Practice location
- 300 Broadway, Somerville, MA 02145
- Phone
- (617) 284-7000
- Enumerated
- Apr 13, 2020
- Entity
- Type 1 · individual
Also registered at 300 Broadway
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Ashley AmarRegistered Nurse1184469769
- Uilst Bat-Erdene, MDStudent in an Organized Health Care Education/Training Program1235985342
- Jessamyn Blau, MDInternal Medicine Physician1376960690
- Barbara Bowe, RNRegistered Nurse1629376959
- Laura BrightmanInternal Medicine Physician1801970546
- Lorena Costa PinheiroHealth Educator1669932653
Verify Casey Callahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in MedicineCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
83% fewer Medicare Part D claims than the average family medicine physician in 2024
598 Medicare Part D claims for 114 beneficiaries, against an average of 3,519 among the 111,126 providers of this specialty who prescribed in Part D. 30 claims were for opioids.
Most prescribed
- Atorvastatin Calcium39 claims
- Omeprazole31 claims
- Amlodipine Besylate29 claims
- Lisinopril23 claims
- Trulicity20 claims
- Diclofenac Sodium19 claims
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.
The practice group's Medicare quality score for 2023: 86.3 of 100
The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).
One hospital or facility affiliation
- Cambridge Public Health CommissionSomerville, MA
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
32 family medicine physician records list a Somerville practice address
They are 32 of the 1,860 NPPES records with a Somerville practice address, and 2,226 family medicine physician records in Massachusetts.
All 32 in Somerville → All 2,226 in Massachusetts → Every provider in Somerville →
Other family medicine physician records in Massachusetts
- Salah Abass, M.D.Methuen, MA1417959776
- Sheila Abdallah, MDWorcester, MA1821356312
- Jonathan Abel, DOSpringfield, MA1700897196
- Mohamed Abib, MDSturbridge, MA1639281090
- Kevin Abraham, M.D.Worcester, MA1689037673
- Janet Abrahamian, M.D.West Boylston, MA1932156627
- John Abramson, M.D.Ipswich, MA1275613903
- John Paul Abroguena, MDPlainville, MA1235361080
- Aliza Acker-Bernstein, M.D.Peabody, MA1023057551
- Lisa Adams, MDFalmouth, MA1235404336
Common questions
What is Casey Callahan, MD's NPI number?
Casey Callahan, MD's National Provider Identifier (NPI) is 1225657919, issued on Apr 13, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Casey Callahan, MD located?
The NPPES record lists a practice address at 300 Broadway, Somerville, MA, 02145. Phone: (617) 284-7000. Providers update this record themselves, so call before visiting.
How can I verify Casey Callahan, MD's license?
Search the Massachusetts Board of Registration in Medicine at https://www.mass.gov/orgs/board-of-registration-in-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Casey Callahan, MD prescribe under Medicare Part D?
In 2024, Casey Callahan, MD had 598 Medicare Part D claims for 114 beneficiaries; the average among family medicine physician prescribers was 3,519. Part D covers Medicare prescriptions only.
What is Casey Callahan, MD's Medicare quality score?
The 2023 MIPS final score is 86.3 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.