NPPES file of Aug 9, 2026

John Geiser, M.D.

Anesthesiology Physician · Dallas, TX

John Geiser, M.D. is an anesthesiology physician with a practice address in Dallas, Texas, and NPI 1861496119, issued on Jun 1, 2005. Check the license (Texas L6049, as entered in NPPES) on the Texas Medical Board; the Medicare figures below come from public CMS files.

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

NPPES recordNPPES file of Aug 9, 2026
1861496119
Name
John Geiser
Credential
M.D.
Primary taxonomy
Anesthesiology Physician 207L00000X
License number
L6049 TX
Self-reported in NPPES; status is on the state search
Practice location
3625 N Hall St Ste 800, Dallas, TX 75219
Phone
(214) 252-3500
Enumerated
Jun 1, 2005
Record last updated
May 22, 2023
Medicare enrollment
Enrolled (PECOS I20060301000478); accepts Medicare assignment
Medical or professional school
University Of Illinois College Of Med (Chi/Peor/Rock/Chm-Urb), 1990
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.
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8 nearest anesthesiology physician records → All 4,635 in Texas → Look up another NPI →

Also registered at 3625 N Hall St Ste 800

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

  1. Paul Courtney, M.D.Anesthesiology Physician1205122033
  2. Hieu Dang, M.D.Anesthesiology Physician1376799056
  3. Virgilio De Gala, M.D.Anesthesiology Physician1417308800
  4. Pranav Deshpande, M.D.Anesthesiology Physician1699129221
  5. Stephen Ellis, M.D.Anesthesiology Physician1861455719
  6. Ari Fleishman, MDAnesthesiology Physician1588605489

Verify John Geiser in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersTexas Medical Board
    Search for license L6049    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 Texas 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.

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Bills Medicare through one group practice

  1. Metropolitan Anesthesia Consultants, LLPRowlett, TX

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

John Geiser among 4,635 anesthesiology physician records in Texas

John Geiser, M.D. is one of 4,635 anesthesiology physician records with a practice address in Texas. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2005, is newer than 0% of them.

  • NPI issued2005 · 0% of these records are older, 85% newer
  • In a Medicare fileYes · 79% of these records are
  • In the CMS Doctors and Clinicians fileYes · 71% of these records are
  • Graduated1990 · median 2005 among the 3,293 with a school on file
  • Record last updated2023 · 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 207L00000X and a Texas practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,392 anesthesiology physician records list a practice address in Dallas

They are 1,392 of the 36,304 NPPES records with a practice address in Dallas, and 4,635 anesthesiology physician records in Texas.

All 4,635 in Texas → Every provider in Dallas → Anesthesiology Physician nationwide →

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Raphael Aybar, M.D.Dallas, TX 752191619970902
  2. Catherine Blakeney, M.D.Dallas, TX 752191265435531
  3. Marc Brown, M.D.Dallas, TX 752191720080013
  4. Joel Ciarochi, M.D.Dallas, TX 752191649272840
  5. Donnie Culpepper, M.D.Dallas, TX 752191316949456
  6. Craig Fisher, D.O.Dallas, TX 752191760484893
  7. Richard Haldeman, M.D.Dallas, TX 752191235133513
  8. H.a. Tillmann Hein, M.D.Dallas, TX 752191275537151

Common questions

What is John Geiser, M.D.'s NPI number?

John Geiser, M.D.'s National Provider Identifier (NPI) is 1861496119, issued on Jun 1, 2005. An NPI identifies a provider in billing; it is not a license.

Where is John Geiser, M.D. located?

The NPPES record lists a practice address at 3625 N Hall St Ste 800, Dallas, TX, 75219. Phone: (214) 252-3500. Providers update this record themselves, so call before visiting.

How can I verify John Geiser, M.D.'s license?

NPPES lists Texas license number L6049, as entered by the provider. Search the Texas Medical Board at https://profile.tmb.state.tx.us/Search.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. 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.