Tammy J. Hamilton, MD
Obstetrics & Gynecology Physician · West Orange, NJ
Tammy J. Hamilton, MD is an obstetrics & gynecology physician with a practice address in West Orange, New Jersey, and NPI 1720148349, issued on Dec 12, 2006. Check the license (New Jersey MA65634, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Tammy J. Hamilton
- Credential
- MD
- Primary taxonomy
- Obstetrics & Gynecology Physician 207V00000X
- License number
- MA65634 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 375 Mount Pleasant Ave, West Orange, NJ 07052
- Phone
- (973) 731-7707
- Enumerated
- Dec 12, 2006
- Record last updated
- Jul 11, 2019 (not updated in 7 years: call before relying on the address or phone)
- Fax
- (973) 669-0277
- Medicare enrollment
- Enrolled (PECOS I20120409000231); accepts Medicare assignment
- Medical or professional school
- Georgetown University School Of Medicine, 1995
- Entity
- Type 1 · individual
8 nearest obstetrics & gynecology physician records → All 1,362 in New Jersey → Look up another NPI →
Also registered at 375 Mount Pleasant Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Nikole Bobadilla, M.D.Obstetrics & Gynecology Physician1790045110
- Donald Brock, M.D.Cardiovascular Disease Physician1659371334
- Yesica Cano, APNGerontology Nurse Practitioner1003581745
- Larisa Cazeau, RNRegistered Nurse1952244170
- Fadi Chaaban, M.D.Cardiovascular Disease Physician1316947906
- Elie Chakhtoura, M.D.Cardiovascular Disease Physician1376543868
Verify Tammy J. Hamilton in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Jersey State Board of Medical Examiners
Search for license MA65634Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
35% fewer Medicare Part D claims than the average obstetrics & gynecology physician in 2024
108 Medicare Part D claims for 57 beneficiaries, against an average of 165 among the 28,733 providers of this specialty who prescribed in Part D. Brand-name drugs were 18% of claims.
Most prescribed
- Estradiol17 claims
- Yuvafem14 claims
- Clobetasol Propionate12 claims
- Premarin11 claims
- Triamcinolone Acetonide11 claims
- Valacyclovir11 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: $22.53
1 payment: food and beverage; the largest payer was Hologic Sales and Service, LLC. The 21,429 providers of this specialty with any payment received $1,030.61 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
- Summit Medical Group PABerkeley Heights, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Tammy J. Hamilton among 1,362 obstetrics & gynecology physician records in New Jersey
Tammy J. Hamilton, MD is one of 1,362 obstetrics & gynecology physician records with a practice address in New Jersey. 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 2006, is newer than 7% of them.
- NPI issued2006 · 7% of these records are older, 49% newer
- In a Medicare fileYes · 80% of these records are
- In the CMS Doctors and Clinicians fileYes · 66% of these records are
- Graduated1995 · median 2003 among the 900 with a school on file
- Record last updated2019 · 60% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207V00000X and a New Jersey practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
32 obstetrics & gynecology physician records list a practice address in West Orange
They are 32 of the 1,370 NPPES records with a practice address in West Orange, and 1,362 obstetrics & gynecology physician records in New Jersey.
All 1,362 in New Jersey → Every provider in West Orange → Obstetrics & Gynecology Physician nationwide →
The 8 obstetrics & gynecology physician records with the nearest ZIP codes
- Yvette Bridges, MDWest Orange, NJ 070521801805197
- Gerald Ciciola, MDWest Orange, NJ 070521003916297
- Stephen Crane, MDWest Orange, NJ 070521073613998
- Gwen David, MDWest Orange, NJ 070521225138308
- Doreen Degraaff, M.D.West Orange, NJ 070521629142401
- Howard Fox, DOWest Orange, NJ 070521811956576
- Allan Kessel, M.D.West Orange, NJ 070521326070376
- Daria Klachko, MDWest Orange, NJ 070521255449724
Common questions
What is Tammy J. Hamilton, MD's NPI number?
Tammy J. Hamilton, MD's National Provider Identifier (NPI) is 1720148349, issued on Dec 12, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Tammy J. Hamilton, MD located?
The NPPES record lists a practice address at 375 Mount Pleasant Ave, West Orange, NJ, 07052. Phone: (973) 731-7707. Providers update this record themselves, so call before visiting.
How can I verify Tammy J. Hamilton, MD's license?
NPPES lists New Jersey license number MA65634, as entered by the provider. Search the New Jersey State Board of Medical Examiners at https://newjersey.mylicense.com/verification/. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Tammy J. Hamilton, MD prescribe under Medicare Part D?
In 2024, Tammy J. Hamilton, MD had 108 Medicare Part D claims for 57 beneficiaries; the average among obstetrics & gynecology physician prescribers was 165. 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.