Dean W. Singer, D.O.
Family Medicine Physician · Greenfield, MA
Dean W. Singer, D.O. is a family medicine physician with a practice address in Greenfield, Massachusetts, and NPI 1396131538, issued on Apr 14, 2015. Check the license (Massachusetts 273045, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Dean W. Singer
- Credential
- D.O.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License number
- 273045 MA
Self-reported in NPPES; status is on the state search - Practice location
- 55 Federal St Ste 220, Greenfield, MA 01301
- Phone
- (413) 225-2792
- Enumerated
- Apr 14, 2015
- Record last updated
- Jul 29, 2025
- Fax
- (833) 941-2303
- Medicare enrollment
- Enrolled (PECOS I20181003003312); accepts Medicare assignment
- Medical or professional school
- New York College Of Osteo Medicine Of New York Institute Of Technology, 2015
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 2,265 in Massachusetts → Look up another NPI →
Also registered at 55 Federal St Ste 220
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Melinda Connors, P.A.Medical Physician Assistant1720044977
- Ashlee Costa, PMHNP-BC, DNP, MSNPsychiatric/Mental Health Nurse Practitioner1881338648
- Christy Russo, PA-CPhysician Assistant1841977857
- Katherine Sacco, CNPFamily Nurse Practitioner1427855220
- Jenna Silk, DPTPhysical Therapist1699664458
- Deanna Welch, NPGerontology Nurse Practitioner1629476072
Verify Dean W. Singer in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 273045Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.9 times the Medicare Part D claims of the average family medicine physician in 2024
10,139 Medicare Part D claims for 546 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 848 claims were for opioids.
Most prescribed
- Atorvastatin Calcium416 claims
- Gabapentin310 claims
- Oxycodone Hcl291 claims
- Omeprazole263 claims
- Levothyroxine Sodium256 claims
- Lisinopril240 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.
Industry payments in 2024: $136.22
5 payments; by number, the most common kind was food and beverage; the largest payer was Kerecis Limited. The 55,478 providers of this specialty with any payment received $902.55 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.
Bills Medicare through one group practice
- Greenfield Primary Care PLLCGreenfield, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dean W. Singer among 2,265 family medicine physician records in Massachusetts
Dean W. Singer, D.O. is one of 2,265 family medicine physician records with a practice address in Massachusetts. 80% 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 73% of them.
- NPI issued2015 · 73% of these records are older, 24% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 68% of these records are
- Graduated2015 · median 2006 among the 1,529 with a school on file
- Record last updated2025 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
24 family medicine physician records list a practice address in Greenfield
They are 24 of the 1,251 NPPES records with a practice address in Greenfield, and 2,265 family medicine physician records in Massachusetts.
All 2,265 in Massachusetts → Every provider in Greenfield → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Mark Allen, M.D.Greenfield, MA 013011285633198
- Jessica Biggie, MDGreenfield, MA 013011689649584
- Marguerite Gump, M.D.Greenfield, MA 013011982604328
- Chandra Hartman, MDGreenfield, MA 013011366428278
- Patricia Iverson, M.D.Greenfield, MA 013011063484038
- Peter Koppenheffer, M.D.Greenfield, MA 013011053637561
- Theodore Lefer, M.D.Greenfield, MA 013011578822748
- Jennifer Madden, MDGreenfield, MA 013011215969043
Common questions
What is Dean W. Singer, D.O.'s NPI number?
Dean W. Singer, D.O.'s National Provider Identifier (NPI) is 1396131538, issued on Apr 14, 2015. An NPI identifies a provider in billing; it is not a license.
Where is Dean W. Singer, D.O. located?
The NPPES record lists a practice address at 55 Federal St Ste 220, Greenfield, MA, 01301. Phone: (413) 225-2792. Providers update this record themselves, so call before visiting.
How can I verify Dean W. Singer, D.O.'s license?
NPPES lists Massachusetts license number 273045, 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 Dean W. Singer, D.O. prescribe under Medicare Part D?
In 2024, Dean W. Singer, D.O. had 10,139 Medicare Part D claims for 546 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.