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MICHAEL LON TAN MD
NPI 1871150763
Anesthesiology in Greenwood Village, CO

Active since May 25, 2019PECOS EnrolledAccepts Medicare Assignment
100/100
CMS Quality Rating
8000 E MAPLEWOOD AVE STE 120, GREENWOOD VILLAGE, CO 80111(303) 438-3999(720) 439-9500 Get Directions Write a Review

NPPES record last updated: July 15, 2024. Verified against the NPPES registry weekly; last sync: October 18, 2026.

Record update history: Jul 15, 2024, May 9, 2023, May 25, 2019 (3 updates tracked since 2019).

About Michael Lon Tan Md NPPES

Official registry information on file with the National Plan and Provider Enumeration System.

MICHAEL LON TAN MD (NPI 1871150763) is an individual anesthesiology provider in Greenwood Village, Colorado, licensed in Colorado (DR.0073400) and active in the NPI registry since May 2019. He is enrolled in Medicare PECOS, maintains 2 additional practice locations, and is a graduate of Texas Tech University Health Science Center School Of Medicine (2019).

NPPES Registry Identity

NPI1871150763
Entity TypeIndividualMale
Primary Taxonomy207L00000X
Provider Legal NameMICHAEL LON TANCredential: MD
Location Address8000 E MAPLEWOOD AVE STE 120Greenwood Village, CO 80111-4766
Mailing AddressPo Box 840862Dallas, TX 75284-0862 · (303) 377-7638 · Fax (303) 780-0787
Phone(303) 438-3999
Fax(720) 439-9500
Sole ProprietorNo
Medical School CMSTexas Tech University Health Science Center School Of MedicineGraduated 2019
Enumeration DateMay 25, 2019
Last NPPES UpdateJuly 15, 20243 updates tracked since enumeration
NPPES CertifiedJuly 15, 2024
✔ NPI 1871150763 is a valid, active identifier and passes the ISO check-digit test.

Specialties & Licenses

★ Primary SpecialtyAnesthesiologyAllopathic & Osteopathic Physicians
Taxonomy Code207L00000X
Licenses✔ Licensed in CO · DR.0073400✔ Licensed in IA · R-11498✔ Licensed in MO · 2023016856
Definition
An anesthesiologist is trained to provide pain relief and maintenance, or restoration, of a stable condition during and immediately following an operation or an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient undergoing surgery and optimizes the patient's condition prior to, during and after surgery. In addition to these management responsibilities, the anesthesiologist provides medical management and consultation in pain management and critical care medicine. Anesthesiologists diagnose and treat acute, long-standing and cancer pain problems; diagnose and treat patients with critical illnesses or severe injuries; direct resuscitation in the care of patients with cardiac or respiratory emergencies, including the need for artificial ventilation; and supervise post-anesthesia recovery.
8000 E MAPLEWOOD AVE STE 120, Greenwood Village, CO 80111
Open in Google Maps ↗

Secondary Practice Locations 2

Location 1200 Hawkins Dr Dept OfIowa City, IA 52242-1009 · Phone (319) 356-2210 · Fax (319) 356-2940
Location 2One Hospital DrColumbia, MO 65212-0001 · Phone (573) 882-2568 · Fax (855) 903-0985

Medicare Participation & PECOS CMS

Medicare enrollment, assignment, billing reassignment, and ordering and referring status from CMS.

Medicare Enrollment Status

✔

Enrolled in Medicare and accepts Medicare assignment

Michael Lon Tan Md is registered in PECOS and agrees to accept the Medicare-approved amount as full payment. Medicare patients are not billed beyond the standard deductible and coinsurance.

PECOS PAC ID9032445770
PECOS Enrollment IDI20240724003933
Eligible to Order & Refer✔ Part B Labs & Imaging✔ Durable Medical Equipment✔ Home Health Agency✔ Power Mobility DevicesPer the CMS Ordering and Referring file. Eligibility means Medicare pays claims that this provider orders or refers for these categories.

Medicare Billing Reassignment

Medicare enrollment records show Michael Tan reassigns Medicare billing to 1 organization. The organization bills Medicare for the services this provider delivers there.

Us Anesthesia Partners Of Colorado Inc.
Same address
Anesthesiology
8000 E MAPLEWOOD AVE STE 120
Greenwood Village, CO 80111
  • Reassigned Medicare billing, Colorado enrollment
  • 971 clinicians in this Medicare group
NPI 1922365782 (303) 438-3999

Source: CMS Revalidation Reassignment List, October 2026 release. Reassignment records can lag staffing changes; confirm a current affiliation with the organization.

Areas of Expertise CMS Part B claims 2

Services this provider delivered to Medicare fee-for-service patients, from the CMS Medicare utilization data. Higher counts generally reflect more experience with a service; care delivered outside Medicare is not included.

Anesthesia for other procedure on esophagus, stomach, or upper small bowel using an endoscope 00731
This procedure involves the use of an endoscope, a flexible tube with a light and camera, to examine your esophagus, stomach, or upper small bowel. Anesthesia ensures you are comfortable and pain-free during the procedure.
29 services29 patients
Anesthesia for x-ray or radiation therapy 01922
Anesthesia for x-ray or radiation therapy involves administering medication to help you relax or sleep during the procedure. It's used to ensure comfort, minimize movement, and reduce anxiety. The type of anesthesia used depends on the procedure and patient's health.
12 services12 patients

Medicare Quality Performance CMS QPP · MIPS

Performance in the CMS Quality Payment Program: the MIPS final score across four weighted categories, and the individual quality measures reported to Medicare.

100/100
MIPS Final ScoreMerit-based Incentive Payment System · CMS Quality Payment Program
Scored as part of a group practice
Promoting Interoperability100
Improvement Activities40

Other Providers at the Same Location NPPES 20

Providers registered at the same practice address, or within the immediate area, according to the NPPES registry.

JENNIFER K KROGH CRNA
Nurse Anesthetist, Certified Registered
8000 E MAPLEWOOD AVE STE 120
GREENWOOD VILLAGE, CO 80111
Arapahoe County (303) 438-3999
TERESA MARIE ROSSETTER CRNA
Nurse Anesthetist, Certified Registered
8000 E MAPLEWOOD AVE STE 120
GREENWOOD VILLAGE, CO 80111
Arapahoe County (303) 438-3999
DAVID R. LADD MD
Anesthesiology (Pediatric Anesthesiology)
8000 E MAPLEWOOD AVE STE 120
GREENWOOD VILLAGE, CO 80111
Arapahoe County (303) 438-3999
JOSHUA STEVEN ADAMS CRNA
Nurse Anesthetist, Certified Registered
8000 E MAPLEWOOD AVE STE 120
GREENWOOD VILLAGE, CO 80111
Arapahoe County (303) 438-3999
NATHAN DOUGLAS APPLEGREN M.D.
Anesthesiology
8000 E MAPLEWOOD AVE STE 120
GREENWOOD VILLAGE, CO 80111
Arapahoe County (303) 438-3999
ZOYA BHARMAL CAA
Anesthesiologist Assistant
8000 E MAPLEWOOD AVE STE 120
GREENWOOD VILLAGE, CO 80111
Arapahoe County (303) 438-3999
ASHLEY NICOLE MORTON CRNA
Nurse Anesthetist, Certified Registered
8000 E MAPLEWOOD AVE STE 120
GREENWOOD VILLAGE, CO 80111
Arapahoe County (303) 438-3999
KELLY REED JORDAN CAA
Anesthesiologist Assistant
8000 E MAPLEWOOD AVE STE 120
GREENWOOD VILLAGE, CO 80111
Arapahoe County (303) 438-3999

Frequently Asked Questions NPPES & CMS

Common questions about this NPI record, answered from the official NPPES registry and CMS datasets shown on this page.

What is Michael Tan's NPI number?

The NPI number for Michael Tan is 1871150763. It was assigned to this individual provider in the NPPES registry on May 25, 2019.

Where is Michael Tan located?

Michael Tan practices at 8000 E Maplewood Ave Ste 120, Greenwood Village, CO 80111. The listed phone number is (303) 438-3999.

What is Michael Tan's specialty?

The primary specialty registered for this NPI is Anesthesiology with taxonomy code 207L00000X.

Is Michael Tan enrolled in Medicare?

Yes. Michael Tan is registered in the Medicare PECOS system and accepts Medicare assignment, which means accepting the Medicare-approved amount as payment in full for covered services.

Which organization bills Medicare for Michael Tan's services?

According to the CMS Revalidation Reassignment List (October 2026 release), Michael Tan reassigns Medicare benefits to Us Anesthesia Partners Of Colorado Inc. (Greenwood Village, CO). The reassignment is filed with Medicare on form CMS-855R, signed by both the clinician and the organization, and lets the organization bill Medicare and receive payment for Michael Tan's services. Reassignment records can lag staffing changes; confirm current arrangements with the organization.

When was this NPI record last updated?

The NPPES record for Michael Tan was last updated on July 15, 2024. NPI Profile syncs weekly with the NPPES registry data releases published by CMS. This NPI record was last updated 2 years ago. If this record has changed at CMS more recently, you can request an on-demand re-check against the live CMS registry, directly from this page.