Blaine E. Messing, MD
Internal Medicine Physician · Westport, CT
Blaine E. Messing, MD is an internal medicine physician with a practice address in Westport, Connecticut, and NPI 1790704690, issued on Jul 19, 2006. Check the license (Connecticut 040857, as entered in NPPES) on the Connecticut Medical Examining Board; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Blaine E. Messing
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 040857 CT
Self-reported in NPPES; status is on the state search - Practice location
- 28 Cross Hwy, Westport, CT 06880
- Phone
- (203) 505-1492
- Enumerated
- Jul 19, 2006
- Record last updated
- Oct 8, 2015 (not updated in 11 years: call before relying on the address or phone)
- Fax
- (203) 221-0125
- Medicaid ID
- 001408576 CT
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,623 in Connecticut → Look up another NPI →
Verify Blaine E. Messing in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersConnecticut Medical Examining Board
Search for license 040857Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Blaine E. Messing among 2,623 internal medicine physician records in Connecticut
Blaine E. Messing, MD is one of 2,623 internal medicine physician records with a practice address in Connecticut. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2006, is newer than 11% of them.
- NPI issued2006 · 11% of these records are older, 52% newer
- In a Medicare fileNo · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 63% of these records are
- Record last updated2015 · 61% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
23 internal medicine physician records list a practice address in Westport
They are 23 of the 886 NPPES records with a practice address in Westport, and 2,623 internal medicine physician records in Connecticut. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 2,623 in Connecticut → Every provider in Westport → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Robert Altbaum, M.D.Westport, CT 068801285736124
- David Baum, M.D.Westport, CT 068801437175486
- Jill Denowitz, M.D.Westport, CT 068801215013941
- Robert Dresdner, M.D.Westport, CT 068801356443204
- Samuel Frumkin, M.D.Westport, CT 068801124120043
- Jay Horn, M.D.Westport, CT 068801013093731
- Nina Karol, M.D.Westport, CT 068801548286818
- Anthony Lamarca, MDWestport, CT 068801336105139
Common questions
What is Blaine E. Messing, MD's NPI number?
Blaine E. Messing, MD's National Provider Identifier (NPI) is 1790704690, issued on Jul 19, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Blaine E. Messing, MD located?
The NPPES record lists a practice address at 28 Cross Hwy, Westport, CT, 06880. Phone: (203) 505-1492. Providers update this record themselves, so call before visiting.
How can I verify Blaine E. Messing, MD's license?
NPPES lists Connecticut license number 040857, as entered by the provider. Search the Connecticut Medical Examining Board at https://www.elicense.ct.gov/Lookup/LicenseLookup.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. 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.