Caroline Korsten Messer, MD
Endocrinology, Diabetes & Metabolism Physician · New York, NY
Caroline Korsten Messer, MD is an endocrinology, diabetes & metabolism physician with a practice address in New York, New York, and NPI 1386855047, issued on May 24, 2007. Check the license (New York 242804, as entered in NPPES) on the NYS Education Department, Office of the Professions; the Medicare figures below come from public CMS files.
- Name
- Caroline Korsten Messer
- Credential
- MD
- Primary taxonomy
- Endocrinology, Diabetes & Metabolism Physician 207RE0101X
- License number
- 242804 NY
Self-reported in NPPES; status is on the state search - Practice location
- 110 E 60TH St RM 802, New York, NY 10022
- Phone
- (646) 760-3256
- Enumerated
- May 24, 2007
- Record last updated
- Jun 17, 2026
- Fax
- (646) 974-9714
- Medicaid ID
- 03184636 NY
- Entity
- Type 1 · individual
8 nearest endocrinology, diabetes & metabolism physician records → All 970 in New York → Look up another NPI →
Also registered at 110 E 60TH St RM 802
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Andrew Moawad, MDInternal Medicine Physician1699263590
- Ramachandra Naik, MDEndocrinology, Diabetes & Metabolism Physician1457533127
Verify Caroline Korsten Messer 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 242804Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
9% more Medicare Part D claims than the average endocrinology, diabetes & metabolism physician in 2024
2,858 Medicare Part D claims for 282 beneficiaries, against an average of 2,630 among the 8,223 providers of this specialty who prescribed in Part D. Brand-name drugs were 49% of claims.
Most prescribed
- Mounjaro335 claims
- Metformin Hcl Er207 claims
- Synthroid196 claims
- Ozempic174 claims
- Levothyroxine Sodium169 claims
- Jardiance125 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: $3,259.21
161 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 5,661 providers of this specialty with any payment received $5,742.15 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.
Caroline Korsten Messer among 970 endocrinology, diabetes & metabolism physician records in New York
Caroline Korsten Messer, MD is one of 970 endocrinology, diabetes & metabolism physician records with a practice address in New York. 86% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 43% of them.
- NPI issued2007 · 43% of these records are older, 49% newer
- In a Medicare fileYes · 86% of these records are
- In the CMS Doctors and Clinicians fileNo · 72% of these records are
- Record last updated2026 · 59% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RE0101X and a New York practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Endocrinology, Diabetes & Metabolism Physician providers in New York
There are 970 endocrinology, diabetes & metabolism physician records in New York.
All 970 in New York → Every provider in New York → Endocrinology, Diabetes & Metabolism Physician nationwide →
The 8 endocrinology, diabetes & metabolism physician records with the nearest ZIP codes
- Richard Arnold, MDNew York, NY 100221750300380
- Conrad Blum, M.D.New York, NY 100221578507018
- Karin Chen, MDNew York, NY 100221477896066
- Victoria Finn, M.D.New York, NY 100221710373212
- Lainie Hurst, M.D.New York, NY 100221013098136
- Emilia Liao, MDNew York, NY 100221639167968
- Simon Lukose, DONew York, NY 100221295317139
- Patrick Mooney, MDNew York, NY 100221396320024
Common questions
What is Caroline Korsten Messer, MD's NPI number?
Caroline Korsten Messer, MD's National Provider Identifier (NPI) is 1386855047, issued on May 24, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Caroline Korsten Messer, MD located?
The NPPES record lists a practice address at 110 E 60TH St RM 802, New York, NY, 10022. Phone: (646) 760-3256. Providers update this record themselves, so call before visiting.
How can I verify Caroline Korsten Messer, MD's license?
NPPES lists New York license number 242804, 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 Caroline Korsten Messer, MD prescribe under Medicare Part D?
In 2024, Caroline Korsten Messer, MD had 2,858 Medicare Part D claims for 282 beneficiaries; the average among endocrinology, diabetes & metabolism physician prescribers was 2,630. 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.