Dennis S. Oh, MD
Neurological Surgery Physician · Springfield, MA
Dennis S. Oh, MD is a neurological surgery physician with a practice address in Springfield, Massachusetts, and NPI 1225111511, issued on Oct 23, 2006. Check the license (Massachusetts 226775, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.
- Name
- Dennis S. Oh
- Credential
- MD
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- 226775 MA
Self-reported in NPPES; status is on the state search - Practice location
- 2 Medical Center Dr, Springfield, MA 01107
- Phone
- (413) 794-5600
- Enumerated
- Oct 23, 2006
- Record last updated
- Nov 15, 2016 (not updated in 10 years: call before relying on the address or phone)
- Fax
- (413) 794-5242
- Medicare enrollment
- Enrolled (PECOS I20050316000076); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 236 in Massachusetts → Look up another NPI →
Also registered at 2 Medical Center Dr
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Michael Albert, M.D.Surgery Physician1346212008
- Albert Alexander, M.D.Surgery Physician1518910694
- Reginald Alouidor, MDSurgery Physician1770548463
- Maria Aquadro, NPFamily Nurse Practitioner1124353040
- Mary Barber, CNMAdvanced Practice Midwife1962502906
- Julie Bell, CNMAdvanced Practice Midwife1245274539
Verify Dennis S. Oh in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
Search for license 226775Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
24% fewer Medicare Part D claims than the average neurological surgery physician in 2024
131 Medicare Part D claims for 79 beneficiaries, against an average of 172 among the 4,378 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims. 46 claims were for opioids.
Most prescribed
- Methylprednisolone50 claims
- Oxycodone Hcl21 claims
- Hydrocodone-Acetaminophen20 claims
- Tizanidine Hcl19 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: $20.00
1 payment: education; the largest payer was Csl Behring. The 5,377 providers of this specialty with any payment received $14,925.58 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
- Baystate Medical Practices IncSpringfield, MA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Dennis S. Oh among 236 neurological surgery physician records in Massachusetts
Dennis S. Oh, MD is one of 236 neurological surgery physician records with a practice address in Massachusetts. 74% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 12% of them.
- NPI issued2006 · 12% of these records are older, 58% newer
- In a Medicare fileYes · 74% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated1992 · median 2001 among the 154 with a school on file
- Record last updated2016 · 69% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207T00000X and a Massachusetts practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Neurological Surgery Physician providers in Massachusetts
There are 236 neurological surgery physician records in Massachusetts.
All 236 in Massachusetts → Every provider in Springfield → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Kamal Kalia, MDSpringfield, MA 011071477635134
- Leslie Lyness, D.O.Springfield, MA 011071578876694
- Richard Ogbuji, M.D.Springfield, MA 011071295097533
- Robert Schapiro, M.D.Springfield, MA 011071467616672
- Deepa Soni, MD, MPHSpringfield, MA 011071487759866
- Natasha McKay, M.D.Springfield, MA 011041033162235
- Ashok PillaiGilbertville, MA 010311528657202
- Mohamad Abdelazeez Khaled, MDSpringfield, MA 011991285825604
Common questions
What is Dennis S. Oh, MD's NPI number?
Dennis S. Oh, MD's National Provider Identifier (NPI) is 1225111511, issued on Oct 23, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Dennis S. Oh, MD located?
The NPPES record lists a practice address at 2 Medical Center Dr, Springfield, MA, 01107. Phone: (413) 794-5600. Providers update this record themselves, so call before visiting.
How can I verify Dennis S. Oh, MD's license?
NPPES lists Massachusetts license number 226775, 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 Dennis S. Oh, MD prescribe under Medicare Part D?
In 2024, Dennis S. Oh, MD had 131 Medicare Part D claims for 79 beneficiaries; the average among neurological surgery physician prescribers was 172. 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.