Nauman A. Diwan, MD
Internal Medicine Physician · Hamilton, NJ
Nauman A. Diwan, MD is an internal medicine physician with a practice address in Hamilton, New Jersey, and NPI 1609802057, issued on Jun 25, 2006. Check the license (New Jersey 25MA06535300, as entered in NPPES) on the New Jersey State Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Nauman A. Diwan
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 25MA06535300 NJ
Self-reported in NPPES; status is on the state search - Practice location
- 1445 Whitehorse Mercerville RD Ste 103, Hamilton, NJ 08619
- Phone
- (609) 587-6661
- Enumerated
- Jun 25, 2006
- Record last updated
- Apr 30, 2021 (not updated in 5 years: call before relying on the address or phone)
- Fax
- (609) 528-8891
- Medicare enrollment
- Enrolled (PECOS I20050516000829); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
Also registered at 1445 Whitehorse Mercerville RD Ste 103
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Catherine Cicco, D.O.Family Medicine Physician1407204571
- Navjot Kaur, MDInternal Medicine Physician1871156810
- Steven Levenberg, M.D.Internal Medicine Physician1710977426
- Nicole Schmid Davis, PACPhysician Assistant1447377197
Verify Nauman A. Diwan 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 25MA06535300Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.1 times the Medicare Part D claims of the average internal medicine physician in 2024
6,620 Medicare Part D claims for 402 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 15% of claims. 148 claims were for opioids.
Most prescribed
- Amlodipine Besylate308 claims
- Atorvastatin Calcium270 claims
- Alprazolam229 claims
- Pantoprazole Sodium212 claims
- Metformin Hcl198 claims
- Levothyroxine Sodium182 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 MIPS final score for 2023 (Medicare payment program): 95.8 of 100
The Merit-based Incentive Payment System score is reported for this clinician. 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; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $261.95
16 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 50,334 providers of this specialty with any payment received $1,303.06 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
- Capital Health Medical GroupPennington, NJ
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
57 internal medicine physician records list a practice address in Hamilton
They are 57 of the 1,187 NPPES records with a practice address in Hamilton, and 4,632 internal medicine physician records in New Jersey.
All 57 in Hamilton → All 4,632 in New Jersey → Every provider in Hamilton →
Other internal medicine physician records in New Jersey
- Joseph Aaron, MD, FACPShort Hills, NJ1861584633
- Sirike Aasmaa, DOMontville, NJ1861549925
- Holly Abate Bersalona, M.D.Sea Girt, NJ1669500492
- Kaniz Zehra Abbas, MDTrenton, NJ1598253858
- Shahida Abbas, MDOld Bridge, NJ1023104098
- Shahed AbbasiNewark, NJ1477810752
- Samih Abbassi, MDWest Orange, NJ1750380358
- Somaya Abboud, MDWest Orange, NJ1326089004
- Hilal Abboushi, MDBloomfield, NJ1548378029
- Anthony Abbruzzi, D.O.Pleasantville, NJ1629034905
Common questions
What is Nauman A. Diwan, MD's NPI number?
Nauman A. Diwan, MD's National Provider Identifier (NPI) is 1609802057, issued on Jun 25, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Nauman A. Diwan, MD located?
The NPPES record lists a practice address at 1445 Whitehorse Mercerville RD Ste 103, Hamilton, NJ, 08619. Phone: (609) 587-6661. Providers update this record themselves, so call before visiting.
How can I verify Nauman A. Diwan, MD's license?
NPPES lists New Jersey license number 25MA06535300, 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 Nauman A. Diwan, MD prescribe under Medicare Part D?
In 2024, Nauman A. Diwan, MD had 6,620 Medicare Part D claims for 402 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Nauman A. Diwan, MD's MIPS final score?
The 2023 MIPS final score is 95.8 of 100. 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.