Siemay Chang Lee, MD
Internal Medicine Physician · Greeley, CO
Siemay Chang Lee, MD is an internal medicine physician with a practice address in Greeley, Colorado, and NPI 1497966824, issued on May 25, 2007. Check the license (Colorado DR.0052999, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Siemay Chang Lee
- Credential
- MD
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License numbers
- DR.0052999 CO
11789 NV
Self-reported in NPPES; status is on the state search - Practice location
- 6767 West 29TH Street, Greeley, CO 80634
- Phone
- (970) 652-2433
- Enumerated
- May 25, 2007
- Record last updated
- Aug 20, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (970) 652-2252
- Medicaid ID
- 19052863 CO
- Medicare enrollment
- Enrolled (PECOS I20140613000773); accepts Medicare assignment
- Medical or professional school
- Tulane University School Of Medicine, 2001
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,046 in Colorado → Look up another NPI →
Also registered at 6767 West 29TH Street
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kelsey BoyerPhysical Therapist1922555218
- Lawrence Davis, MDSurgery Physician1851382634
- Ariadne Ebel, D.O,Rheumatology Physician1912391962
- Alexander Grell, PA-CPhysician Assistant1245636737
- Cathy Smith, MDOccupational Medicine Physician1912955097
Verify Siemay Chang Lee in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0052999Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.3 times the Medicare Part D claims of the average internal medicine physician in 2024
10,353 Medicare Part D claims for 697 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 11% of claims. 320 claims were for opioids.
Most prescribed
- Atorvastatin Calcium628 claims
- Levothyroxine Sodium511 claims
- Lisinopril409 claims
- Omeprazole374 claims
- Gabapentin319 claims
- Amlodipine Besylate244 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Bills Medicare through one group practice
- Poudre Valley Medical Group LLCFirestone, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Siemay Chang Lee among 2,046 internal medicine physician records in Colorado
Siemay Chang Lee, MD is one of 2,046 internal medicine physician records with a practice address in Colorado. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 40% of them.
- NPI issued2007 · 40% of these records are older, 39% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2001 · median 2006 among the 1,090 with a school on file
- Record last updated2020 · 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 Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
37 internal medicine physician records list a practice address in Greeley
They are 37 of the 3,518 NPPES records with a practice address in Greeley, and 2,046 internal medicine physician records in Colorado.
All 2,046 in Colorado → Every provider in Greeley → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Phebe Abraham, MDGreeley, CO 806341558980540
- Judith Anderson, M.D.Greeley, CO 806341780809848
- Andrew Beaulieu, M.D.Greeley, CO 806341346352457
- Zachary Brodie, DOGreeley, CO 806341306521471
- Dana Christiansen, MDGreeley, CO 806341679571103
- Brian Daily, MDGreeley, CO 806341033647896
- Stanley Edwards, MDGreeley, CO 806341316907876
- David Knechtges, MDGreeley, CO 806341912090457
Common questions
What is Siemay Chang Lee, MD's NPI number?
Siemay Chang Lee, MD's National Provider Identifier (NPI) is 1497966824, issued on May 25, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Siemay Chang Lee, MD located?
The NPPES record lists a practice address at 6767 West 29TH Street, Greeley, CO, 80634. Phone: (970) 652-2433. Providers update this record themselves, so call before visiting.
How can I verify Siemay Chang Lee, MD's license?
NPPES lists Colorado license number DR.0052999, 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.
How much does Siemay Chang Lee, MD prescribe under Medicare Part D?
In 2024, Siemay Chang Lee, MD had 10,353 Medicare Part D claims for 697 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
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.