Gary Alan Zimmerman, M.D.
Neurological Surgery Physician · New Haven, CT
Gary Alan Zimmerman, M.D. is a neurological surgery physician with a practice address in New Haven, Connecticut, and NPI 1265458152, issued on Jul 14, 2006. Check the license (Connecticut 035901, as entered in NPPES) on the Connecticut Medical Examining Board; the Medicare figures below come from public CMS files.
- Name
- Gary Alan Zimmerman
- Credential
- M.D.
- Primary taxonomy
- Neurological Surgery Physician 207T00000X
- License number
- 035901 CT
Self-reported in NPPES; status is on the state search - Practice location
- 333 Cedar St, New Haven, CT 06510
- Phone
- (203) 257-3663
- Enumerated
- Jul 14, 2006
- Record last updated
- Jul 1, 2024
- Medicaid ID
- 001359018 CT
- Medicare enrollment
- Enrolled (PECOS I20101112000706); accepts Medicare assignment
- Medical or professional school
- State University Of New York Downstate Medical Center, 1990
- Entity
- Type 1 · individual
8 nearest neurological surgery physician records → All 108 in Connecticut → Look up another NPI →
Also registered at 333 Cedar St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Khalid Abbed, MDNeurological Surgery Physician1386612026
- Wasan Abd Wahab, M.D.Neurology Physician1881380053
- Ghaith Abdulkarim, M.D.Critical Care Medicine (Anesthesiology) Physician1295021236
- Clara Abraham, MDGastroenterology Physician1629139456
- Aymen Alian, M.B.B.CH, M.D.Anesthesiology Physician1386803740
- Robert Alpern, MDNephrology Physician1477785285
Verify Gary Alan Zimmerman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 035901Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
43% fewer Medicare Part D claims than the average neurological surgery physician in 2024
98 Medicare Part D claims for 53 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. 54 claims were for opioids.
Most prescribed
- Tramadol Hcl37 claims
- Cyclobenzaprine Hcl28 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 MIPS final score for 2023 (Medicare payment program): 70.8 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).
Industry payments in 2024: $344.14
8 payments; by number, the most common kind was food and beverage; the largest payer was Medtronic, Inc. 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 2 group practices
- Rehabilitation Associates IncFairfield, CT
- Yale UniversityNew Haven, CT
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Gary Alan Zimmerman among 108 neurological surgery physician records in Connecticut
Gary Alan Zimmerman, M.D. is one of 108 neurological surgery physician records with a practice address in Connecticut. 75% 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, 50% newer
- In a Medicare fileYes · 75% of these records are
- In the CMS Doctors and Clinicians fileYes · 64% of these records are
- Graduated1990 · median 2002 among the 69 with a school on file
- Record last updated2024 · 62% 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 Connecticut 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 Connecticut
There are 108 neurological surgery physician records in Connecticut.
All 108 in Connecticut → Every provider in New Haven → Neurological Surgery Physician nationwide →
The 8 neurological surgery physician records with the nearest ZIP codes
- Khalid Abbed, MDNew Haven, CT 065101386612026
- Farhad Bahrassa, M.D.New Haven, CT 065101154584142
- Juan Bartolomei, M.D.New Haven, CT 065101922033489
- Michael Diluna, M.D.New Haven, CT 065101265616726
- Charles Duncan, MDNew Haven, CT 065101417948688
- Mihir Gupta, M.D.New Haven, CT 065101194107375
- Ryan Hebert, MDNew Haven, CT 065101972765600
- Luis Kolb, M.D.New Haven, CT 065101457595035
Common questions
What is Gary Alan Zimmerman, M.D.'s NPI number?
Gary Alan Zimmerman, M.D.'s National Provider Identifier (NPI) is 1265458152, issued on Jul 14, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Gary Alan Zimmerman, M.D. located?
The NPPES record lists a practice address at 333 Cedar St, New Haven, CT, 06510. Phone: (203) 257-3663. Providers update this record themselves, so call before visiting.
How can I verify Gary Alan Zimmerman, M.D.'s license?
NPPES lists Connecticut license number 035901, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Gary Alan Zimmerman, M.D. prescribe under Medicare Part D?
In 2024, Gary Alan Zimmerman, M.D. had 98 Medicare Part D claims for 53 beneficiaries; the average among neurological surgery physician prescribers was 172. Part D covers Medicare prescriptions only.
What is Gary Alan Zimmerman, M.D.'s MIPS final score?
The 2023 MIPS final score is 70.8 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), 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.