NPPES file of Aug 9, 2026

Michael Lon Tan, MD

Anesthesiology Physician · Greenwood Village, CO

Michael Lon Tan, MD is an anesthesiology physician with a practice address in Greenwood Village, Colorado, and NPI 1871150763, issued on May 25, 2019. Check the license (Colorado DR.0073400, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2023 and 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1871150763
Name
Michael Lon Tan
Credential
MD
Primary taxonomy
Anesthesiology Physician 207L00000X
License numbers
DR.0073400 CO
R-11498 IA
2023016856 MO
Self-reported in NPPES; status is on the state search
Practice location
8000 E Maplewood Ave Ste 120, Greenwood Village, CO 80111
Phone
(303) 438-3999
Enumerated
May 25, 2019
Record last updated
Jul 15, 2024
Fax
(720) 439-9500
Medicare enrollment
Enrolled (PECOS I20240724003933); accepts Medicare assignment
Medical or professional school
Texas Tech University Health Science Center School Of Medicine, 2019
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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Also registered at 8000 E Maplewood Ave Ste 120

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

  1. Jacob AbelCertified Registered Nurse Anesthetist1902610553
  2. Joshua Adams, CRNACertified Registered Nurse Anesthetist1013456060
  3. Eric AhlstedtAnesthesiologist Assistant1982136925
  4. Kaitlin AhlstedtAnesthesiologist Assistant1508422684
  5. Maarij Ahmad, DOAnesthesiology Physician1073176228
  6. Jason Anderkin, CAAAnesthesiologist Assistant1194519785

Verify Michael Lon Tan in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersColorado Medical Board
    Search for license DR.0073400
    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 Colorado 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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The practice group's MIPS final score for 2023 (Medicare payment program): 100 of 100

The Merit-based Incentive Payment System score is reported for the practice group, not for one clinician alone. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.

  1. Qualitynot scored (reweighted)
  2. Costnot scored (reweighted)
  3. Promoting interoperabilityout of 100 · 25%100.0
  4. Improvement activities40 of 40 points · 15%100.0

Source: CMS Quality Payment Program, MIPS performance year 2023, group reporting; category weights for 2023 (qpp.cms.gov).

Industry payments in 2024: $1,830.46

20 payments; by number, the most common kind was food and beverage; the largest payer was Abbott Laboratories. The 17,774 providers of this specialty with any payment received $669.59 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.

  1. Michael Tan$1,830.46
  2. Specialty average$669.59

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. US Anesthesia Partners OF Colorado IncColorado Springs, CO

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

Michael Lon Tan among 1,202 anesthesiology physician records in Colorado

Michael Lon Tan, MD is one of 1,202 anesthesiology physician records with a practice address in Colorado. 75% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 91% of them.

  • NPI issued2019 · 91% of these records are older, 6% newer
  • In a Medicare fileYes · 75% of these records are
  • In the CMS Doctors and Clinicians fileYes · 69% of these records are
  • Graduated2019 · median 2006 among the 824 with a school on file
  • Record last updated2024 · 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 207L00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

155 anesthesiology physician records list a practice address in Greenwood Village

They are 155 of the 2,654 NPPES records with a practice address in Greenwood Village, and 1,202 anesthesiology physician records in Colorado.

The 8 anesthesiology physician records with the nearest ZIP codes

  1. Marianne Bailliet, MDGreenwood Village, CO 801111417958141
  2. Bruce Baird, MDGreenwood Village, CO 801111033197272
  3. Glenn Bolton, MDGreenwood Village, CO 801111841279171
  4. Carl Boyd, M.D.Greenwood Village, CO 801111487642971
  5. Marc Gattiker, MDGreenwood Village, CO 801111457330581
  6. Liam McCarthy, M.D.Greenwood Village, CO 801111760482491
  7. Paul Miller, M.D.Greenwood Village, CO 801111255318366
  8. Ronald Minter, MDGreenwood Village, CO 801111578553731

Common questions

What is Michael Lon Tan, MD's NPI number?

Michael Lon Tan, MD's National Provider Identifier (NPI) is 1871150763, issued on May 25, 2019. An NPI identifies a provider in billing; it is not a license.

Where is Michael Lon Tan, MD located?

The NPPES record lists a practice address at 8000 E Maplewood Ave Ste 120, Greenwood Village, CO, 80111. Phone: (303) 438-3999. Providers update this record themselves, so call before visiting.

How can I verify Michael Lon Tan, MD's license?

NPPES lists Colorado license number DR.0073400, as entered by the provider. Search the Colorado Medical Board at https://dpo.colorado.gov/Medical. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.

What is Michael Lon Tan, MD's MIPS final score?

The 2023 MIPS final score is 100 of 100, reported for the practice group. The average among 454,083 clinicians with a measured score was 83.5.

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.