Robert Larkin, MD
Internal Medicine Physician · Manchester, NH
Robert Larkin, MD is an internal medicine physician with a practice address in Manchester, New Hampshire, and NPI 1457397713, issued on Jun 22, 2006. Check the license (New Hampshire 11001, as entered in NPPES) on the New Hampshire Board of Medicine; the Medicare figures below come from public CMS files.
- Name
- Robert Larkin
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 11001 NH
Self-reported in NPPES; status is on the state search - Practice location
- 57 Webster St, Manchester, NH 03104
- Phone
- (603) 668-6489
- Enumerated
- Jun 22, 2006
- Entity
- Type 1 · individual
Also registered at 57 Webster St
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Belinda Castor, M.D.Internal Medicine Physician1679517031
- Brian Claussen, M.D.Family Medicine Physician1952394538
- Christine Cochrane, D.O.Internal Medicine Physician1245215631
- Paige Fowler, RNRegistered Nurse1043167240
- Scott Hochgraf, MDInternal Medicine Physician1568403350
- Kristyna Lampman, APRNNurse Practitioner1154742179
Verify Robert Larkin in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNew Hampshire Board of Medicine
Search for license 11001Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS, AOA, NCCPA, AANPNot checked
62% more Medicare Part D claims than the average internal medicine physician in 2024
4,507 Medicare Part D claims for 426 beneficiaries, against an average of 2,785 among the 127,794 providers of this specialty who prescribed in Part D. Brand-name drugs were 10% of claims.
Most prescribed
- Atorvastatin Calcium513 claims
- Amlodipine Besylate287 claims
- Lisinopril218 claims
- Metformin Hcl179 claims
- Pantoprazole Sodium177 claims
- Levothyroxine Sodium175 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.
111 internal medicine physician records list a Manchester practice address
They are 111 of the 4,401 NPPES records with a Manchester practice address, and 779 internal medicine physician records in New Hampshire.
All 111 in Manchester → All 779 in New Hampshire → Every provider in Manchester →
Other internal medicine physician records in New Hampshire
- Lauren Abbott, MDPortsmouth, NH1619597234
- Cherif Abdelmalek, M.D.Nashua, NH1922396753
- Champa Abeysinghe, M.D.New London, NH1629257134
- Suzanne Abkowitz, MDNorth Conway, NH1811906506
- Arthur Ablayev, MDConcord, NH1598178881
- Indira AcharyaLebanon, NH1407428600
- Philip Adamo, MDLebanon, NH1437106838
- Lisa Adams, MDLebanon, NH1912225186
- Muhammad Afzal, M.D.Lebanon, NH1982983821
- Ojobumijo Agbaji, MDLaconia, NH1689195042
Common questions
What is Robert Larkin, MD's NPI number?
Robert Larkin, MD's National Provider Identifier (NPI) is 1457397713, issued on Jun 22, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Robert Larkin, MD located?
The NPPES record lists a practice address at 57 Webster St, Manchester, NH, 03104. Phone: (603) 668-6489. Providers update this record themselves, so call before visiting.
How can I verify Robert Larkin, MD's license?
NPPES lists New Hampshire license number 11001, as entered by the provider. Search the New Hampshire Board of Medicine at https://www.oplc.nh.gov/board-medicine. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Robert Larkin, MD prescribe under Medicare Part D?
In 2024, Robert Larkin, MD had 4,507 Medicare Part D claims for 426 beneficiaries; the average among internal medicine physician prescribers was 2,785. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.