NPPES file of Aug 9, 2026

Carl Geahchan, M.D

Critical Care Medicine (Anesthesiology) Physician · Boston, MA

Carl Geahchan, M.D is a critical care medicine (anesthesiology) physician with a practice address in Boston, Massachusetts, and NPI 1902272776, issued on Aug 17, 2015. Check the license (Massachusetts 287954, as entered in NPPES) on the Massachusetts Board of Registration in Medicine; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1902272776
Name
Carl Geahchan
Credential
M.D
Primary taxonomy
Critical Care Medicine (Anesthesiology) Physician 207LC0200X
License number
287954 MA
Self-reported in NPPES; status is on the state search
Practice location
800 Washington St, Boston, MA 02111
Phone
(617) 636-8003
Enumerated
Aug 17, 2015
Record last updated
Feb 19, 2024
Medicare enrollment
Enrolled (PECOS I20211022000525); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
Download card Updates feed

Also registered at 800 Washington St

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Jeffrey Aalberg, MD, MPHSurgery Physician1326788027
  2. Omer Abbak, PHARMDPharmacist1114500337
  3. Aya Abdelnaser, MDStudent in an Organized Health Care Education/Training Program1770425373
  4. Marie Elise Abi Antoun, MDObstetrics & Gynecology Physician1356042626
  5. Ahmad AboalfarajSurgery Physician1538517651
  6. Tala Abu Samaan, MDStudent in an Organized Health Care Education/Training Program1376386250

Verify Carl Geahchan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersMassachusetts Board of Registration in Medicine
    Search for license 287954    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Open the Massachusetts license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

Is this page about you? You can ask us to correct, restrict or remove it: how.

Industry payments in 2024: $15.40

1 payment: food and beverage; the largest payer was Masimo Corporation. The 394 providers of this specialty with any payment received $2,001.81 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Carl Geahchan$15.40
  2. Specialty average$2,001.81

Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.

Bills Medicare through one group practice

  1. Pratt Anesthesiology Associates IncBoston, MA

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Critical Care Medicine (Anesthesiology) Physician providers in Massachusetts

There are 69 critical care medicine (anesthesiology) physician records in Massachusetts.

All 69 in Massachusetts → Every provider in Boston →

Other critical care medicine (anesthesiology) physician records in Massachusetts

  1. Neyaz Ahmad, MDWest Roxbury, MA1427213834
  2. Houman Amirfarzan, M.D.West Roxbury, MA1760636518
  3. Matthew Anstey, M.DBoston, MA1801198056
  4. Amit Bardia, MDBoston, MA1902118185
  5. William Benedetto, MDBoston, MA1316938608
  6. Lorenzo Berra, MDBoston, MA1619168739
  7. Sascha Beutler, M.D.W Roxbury, MA1992742647
  8. Andrew Burr, D.O.Worcester, MA1922206838
  9. Hovig Chitilian, MDBoston, MA1447240619
  10. Seema Chowdhury, MDWest Roxbury, MA1669606091

Common questions

What is Carl Geahchan, M.D's NPI number?

Carl Geahchan, M.D's National Provider Identifier (NPI) is 1902272776, issued on Aug 17, 2015. An NPI identifies a provider in billing; it is not a license.

Where is Carl Geahchan, M.D located?

The NPPES record lists a practice address at 800 Washington St, Boston, MA, 02111. Phone: (617) 636-8003. Providers update this record themselves, so call before visiting.

How can I verify Carl Geahchan, M.D's license?

NPPES lists Massachusetts license number 287954, as entered by the provider. Search the Massachusetts Board of Registration in Medicine at https://findmydoctor.mass.gov/. 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. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Written with AI tools from the named public files; every figure is computed from those files (how it is made).

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.