Dr. Robert John Larkin, MD
- Medicare services, 2024
- 387
- Medicare patients, 2024
- 214
- Part D claims, 2024
- 4,507
- Affiliated sites
- 2
- Medical groups
- 2
- Practice address
- 57 Webster St, Manchester, NH 03104-2552
- Practice phone
- Call (603) 663-7852
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Catholic Medical Center
Primary care practice · Manchester, New Hampshire
Find Dr. Larkin's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Dr. Robert John Larkin is an internist in Manchester, New Hampshire
Dr. Larkin practices at Catholic Medical Center in Manchester, New Hampshire.
Dr. Larkin's NPI, 1457397713, was assigned on June 22, 2006. Dr. Larkin graduated from New York Medical College in 1997. Dr. Larkin holds New Hampshire license 11001.
- NPI
- 1457397713NPI Registry (opens in a new tab)
- NPI enumeration date
- June 22, 2006
- NPI status
- Active
- Practice phone
- (603) 663-7852
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 55
- Medical school graduation
- 1997
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Robert John Larkin practices at Catholic Medical Center in Manchester, New Hampshire
Dr. Larkin's primary practice is Catholic Medical Center, at 57 Webster St, Manchester, NH 03104-2552. The practice phone is (603) 663-7852.
- Catholic Medical Center57 Webster St, Manchester, NH 03104-2552Phone(603) 663-7852
Source: Dmand AI Affiliation Data
Dr. Robert John Larkin is affiliated with 2 sites of care and 2 medical groups
Dr. Larkin's primary practice is Catholic Medical Center in Manchester, New Hampshire. The medical group on file is Surgical Care Group. Dmand AI also links Dr. Larkin to 1 more group practice or clinic and 1 medical group, each named with a free account.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Robert John Larkin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Larkin practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Catholic Medical Center | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert John Larkin is one of 577 internists in New Hampshire
Internal medicine is Dr. Larkin's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Larkin is licensed in New Hampshire.
Specialties and state licenses
- Internal medicine, New HampshirePrimary
Internists near Dr. Larkin
Counts of internists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Robert John Larkin billed Medicare for 387 services in 2024
CMS data shows 387 Medicare services from Dr. Larkin across 4 procedure codes in 2024, for 214 Medicare patients. Medicare paid $22,500 for them. Every service was in an office.
Dr. Larkin's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Other services
- 2023: 2002024: 1962%
- Office and hospital visits
- 2023: 3802024: 19150%
- Tests and treatments
- 2023: 262024: 0100%
Dr. Larkin compared with the New Hampshire median for internists, 2024
- Dr. Larkin
- New Hampshire median
- Medicare services
- 387vs 43010% below
- Medicare patients
- 214vs 2317% below
- Part D claims
- 3,882vs 17921.7 times
Medians across 583 internists in New Hampshire with Dmand AI profiles that report each measure.
Dr. Larkin's most billed Medicare procedure codes, 2024
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Larkin and other internists in New Hampshire.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert John Larkin treated 214 Medicare patients in 2024, average age 75
CMS counts 214 Medicare patients who saw Dr. Larkin in 2024. The largest group is 65 to 74, with 85 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 8% are also on Medicaid. Their average risk score is 1.16, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Larkin's median patient age at 67, with 39% women.
Dr. Larkin's Medicare patients by age, 2024
Dr. Larkin's Medicare patients by sex, 2024
- Women7836%
- Men13664%
Chronic conditions among Dr. Larkin's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Diabetes35%
- Ischemic heart disease31%
- Arthritis30%
- Chronic kidney disease27%
- Atrial fibrillation24%
- Heart failure21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Larkin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 67
Patient panel by sex, all payers
- Women39%
- Men60%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Robert John Larkin wrote 4,507 Medicare Part D claims in 2024
In 2024, Dr. Larkin wrote 4,507 Medicare Part D claims for 426 patients. 89% of them were for generic drugs. CMS names the drug for 3,882 of them, across 75 drugs with 11 or more claims each, at $170,737 in total drug cost. In 2023, CMS named 6,187 claims across 103 drugs.
Dr. Larkin's Part D claims by kind of drug, 2024
- Generic3,995 claims89%
- Brand-name463 claims10%
- Other49 claims1%
Dr. Larkin's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Larkin's Part D claims, 2024
- Antibiotics1%26 of 4,507 claims
- Antipsychotics, patients 65 and over0%20 of 4,507 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6,1872024: 3,88237%
Drugs named by CMS: 75 in 2024, 103 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
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Dr. Robert John Larkin graduated from New York Medical College
Dr. Larkin graduated from New York Medical College in 1997.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Robert John Larkin's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about Dr. Robert John Larkin
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Robert John Larkin's NPI number?
Dr. Robert John Larkin's NPI number is 1457397713. It was assigned on June 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert John Larkin?
Dr. Robert John Larkin is an internist in Manchester, New Hampshire. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Robert John Larkin practice?
Dr. Larkin practices at 57 Webster St, Manchester, NH 03104-2552. Dr. Larkin's primary practice is Catholic Medical Center in Manchester, New Hampshire. Dmand AI also links Dr. Larkin to 1 group practice or clinic and 1 medical group.
What is Dr. Robert John Larkin's office phone number?
The practice phone on file for Dr. Larkin is (603) 663-7852.
What is Dr. Robert John Larkin's medical license number?
Dr. Larkin holds New Hampshire license 11001.
What medical group is Dr. Robert John Larkin part of?
Dr. Larkin is linked to Surgical Care Group. Dmand AI links Dr. Larkin to 1 more medical group.
Does Dr. Robert John Larkin accept Medicare?
Yes. CMS data shows Dr. Larkin billed Medicare for 387 services in 2024.
How many Medicare patients does Dr. Robert John Larkin see?
CMS counts 214 Medicare patients who saw Dr. Larkin in 2024, with an average age of 75.
What services does Dr. Robert John Larkin bill to Medicare?
In 2024, Dr. Larkin's most billed Medicare services were medicare service (G2211), office visit, established patient (99214) and office visit, established patient (99213).
Where did Dr. Robert John Larkin go to medical school?
Dr. Larkin graduated from New York Medical College in 1997.
What drugs does Dr. Robert John Larkin prescribe most?
In 2024 Medicare Part D data, Dr. Larkin's most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Lisinopril.
How long has Dr. Robert John Larkin been practicing?
Dr. Larkin graduated from medical school in 1997, 29 years ago.
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