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Physician Profile

Caroline K. Messer, MD

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At a glance

About Dr. Messer

Caroline K. Messer, MD practices endocrinology, diabetes & metabolism in New York, NY. Caroline is a 2005 graduate of Icahn School of Medicine at Mount Sinai. Caroline is also listed as specializing in internal medicine. The provider's National Provider Identifier (NPI) is 1386855047.

Factual summary compiled by Guide.md from public records; not written by this provider.

Education & Training

Credentials & Licensing

NY licenceAs reported to the NPI registry
No. 242804As reported
NPINational Provider Identifier
1386855047Issued 2007

As reported to the NPI registry ↗

Medicare information

Accepts Medicare assignmentSometimes (reported per claim)
Medicare opt-outEnded April 2025
Can order and refer in MedicareYes

Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.

Common questions

What kind of doctor is Dr. Messer?

Dr. Messer is an endocrinologist in New York, NY. That is the designation recorded for this NPI in the federal registry, where it is listed as “Endocrinology, Diabetes & Metabolism”.

NPI registry

What is Dr. Messer's address?

Dr. Messer is listed at 110 E 60Th St Rm 802, New York, NY 10022. Addresses come from the NPI registry and can lag a move, so confirm before travelling.

NPI registry

How can I make an appointment with Dr. Messer?

The number on file is (646) 760-3256. Contact the office directly to confirm availability and scheduling.

NPI registry

What is the NPI for Dr. Messer?

Dr. Messer's National Provider Identifier is 1386855047. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.

NPI registry

Where did Dr. Messer train?

Dr. Messer attended Icahn School of Medicine at Mount Sinai, graduating in 2005. This comes from the CMS National Downloadable File.

CMS public data

How much experience does Dr. Messer have?

Dr. Messer has 21 years experience. Calculated from a graduation year of 2005, reported in the CMS National Downloadable File.

CMS public data

Is Dr. Messer's profile verified?

Not yet. This profile is built from public federal data and has not been confirmed by Dr. Messer. If this is you, claiming it is free.

Guide.md

Guide.md listings do not constitute medical advice or an endorsement.