John G. Larsen, MD
Pediatric Infectious Diseases Physician · New York City, NY
John G. Larsen, MD is a pediatric infectious diseases physician with a practice address in New York City, New York, and NPI 1700974169, issued on Oct 11, 2006. Check the license (New York 129356, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- John G. Larsen
- Credential
- MD
- Primary taxonomy
- Pediatric Infectious Diseases Physician 2080P0208X
- License number
- 129356 NY
Self-reported in NPPES; status is on the state search - Practice location
- 1245 Park Ave, New York City, NY 10128
- Phone
- (212) 427-0540
- Enumerated
- Oct 11, 2006
- Record last updated
- Sep 11, 2025
- Fax
- (212) 534-1086
- Medicaid ID
- 00686035 NY
- Entity
- Type 1 · individual
8 nearest pediatric infectious diseases physician records → All 120 in New York → Look up another NPI →
Verify John G. Larsen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersNYS Education Department, Office of the Professions
Search for license 129356Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
85% fewer Medicare Part D claims than the average pediatric infectious diseases physician in 2024
25 Medicare Part D claims, against an average of 165 among the 111 providers of this specialty who prescribed in Part D.
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: $275.86
13 payments; by number, the most common kind was food and beverage; the largest payer was kaleo, Inc. The 294 providers of this specialty with any payment received $9,151.53 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.
John G. Larsen among 120 pediatric infectious diseases physician records in New York
John G. Larsen, MD is one of 120 pediatric infectious diseases physician records with a practice address in New York. 38% 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 14% of them.
- NPI issued2006 · 14% of these records are older, 45% newer
- In a Medicare fileYes · 38% of these records are
- In the CMS Doctors and Clinicians fileNo · 18% of these records are
- Record last updated2025 · 53% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 2080P0208X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
3 pediatric infectious diseases physician records list a practice address in New York City
They are 3 of the 364 NPPES records with a practice address in New York City, and 120 pediatric infectious diseases physician records in New York.
All 120 in New York → Every provider in New York City → Pediatric Infectious Diseases Physician nationwide →
The 8 pediatric infectious diseases physician records with the nearest ZIP codes
- Margaret Macdonald, M.D.New York, NY 100651528461530
- Aracelis Fernandez, M.D.New York, NY 100371952393001
- Melanie DuboisNew York City, NY 102211780031773
- Marc FocaNew York, NY 100321881660512
- Irene Frantzis, MDNew York, NY 100321164951869
- Anne GershonNew York, NY 100321457327843
- Candace Johnson, M.D.New York, NY 100321417242553
- Philip Larussa, MDNew York, NY 100321053390708
Common questions
What is John G. Larsen, MD's NPI number?
John G. Larsen, MD's National Provider Identifier (NPI) is 1700974169, issued on Oct 11, 2006. An NPI identifies a provider in billing; it is not a license.
Where is John G. Larsen, MD located?
The NPPES record lists a practice address at 1245 Park Ave, New York City, NY, 10128. Phone: (212) 427-0540. Providers update this record themselves, so call before visiting.
How can I verify John G. Larsen, MD's license?
NPPES lists New York license number 129356, as entered by the provider. Search the NYS Education Department, Office of the Professions at https://www.op.nysed.gov/services/verifications/online-verification-searches. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does John G. Larsen, MD prescribe under Medicare Part D?
In 2024, John G. Larsen, MD had 25 Medicare Part D claims; the average among pediatric infectious diseases 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.