Ian A. Lang, DO
Internal Medicine Physician · Lafayette, CO
Ian A. Lang, DO is an internal medicine physician with a practice address in Lafayette, Colorado, and NPI 1184786998, issued on Dec 15, 2006. Check the license (Colorado 52525, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Ian A. Lang
- Credential
- DO
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 52525 CO
Self-reported in NPPES; status is on the state search - Practice location
- 280 Exempla Cir, Lafayette, CO 80026
- Phone
- (303) 338-4545
- Enumerated
- Dec 15, 2006
- Record last updated
- May 3, 2021 (not updated in 5 years: call before relying on the address or phone)
- Medicaid ID
- 62137271 CO
- Medicare enrollment
- Enrolled (PECOS I20131023001463); accepts Medicare assignment
- Medical or professional school
- At Still University Of Health Sciences, College Of Osteo Med, Kirksville, 2006
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 2,046 in Colorado → Look up another NPI →
Also registered at 280 Exempla Cir
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Phyllis Acker, RNRheumatology Physician1821125709
- Brian AcresAmbulatory Care Registered Nurse1174865752
- Jennifer AirhartNurse's Aide1336276310
- Alice Albert, ODOptometrist1639206683
- Jill Allen, R.N.Registered Nurse1114043726
- Sandra AllenNurse's Aide1760519789
Verify Ian A. Lang in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license 52525Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
88% more Medicare Part D claims than the average internal medicine physician in 2024
5,957 Medicare Part D claims for 537 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. 169 claims were for opioids.
Most prescribed
- Atorvastatin Calcium556 claims
- Losartan Potassium271 claims
- Rosuvastatin Calcium265 claims
- Levothyroxine Sodium248 claims
- Amlodipine Besylate215 claims
- Tamsulosin Hcl178 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
- Colorado Permanente Medical Group PCLafayette, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Ian A. Lang among 2,046 internal medicine physician records in Colorado
Ian A. Lang, DO 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 2006, is newer than 10% of them.
- NPI issued2006 · 10% of these records are older, 60% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 53% of these records are
- Graduated2006 · median 2006 among the 1,090 with a school on file
- Record last updated2021 · 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).
45 internal medicine physician records list a practice address in Lafayette
They are 45 of the 1,905 NPPES records with a practice address in Lafayette, and 2,046 internal medicine physician records in Colorado.
All 2,046 in Colorado → Every provider in Lafayette → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- Vincent Bilello, M.D.Lafayette, CO 800261821070756
- Susan Blakley, M.D.Lafayette, CO 800261316932387
- Abby Bleistein, M.D.Lafayette, CO 800261235119553
- Cezary Dobija, M.D.Lafayette, CO 800261639151459
- Lisabeth Hall, MDLafayette, CO 800261376578187
- Mahasti Kalantar, MDLafayette, CO 800261598865313
- Lorena Letkomiller, M.D.Lafayette, CO 800261205892239
- Robert McClure, M.D.Lafayette, CO 800261609927367
Common questions
What is Ian A. Lang, DO's NPI number?
Ian A. Lang, DO's National Provider Identifier (NPI) is 1184786998, issued on Dec 15, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Ian A. Lang, DO located?
The NPPES record lists a practice address at 280 Exempla Cir, Lafayette, CO, 80026. Phone: (303) 338-4545. Providers update this record themselves, so call before visiting.
How can I verify Ian A. Lang, DO's license?
NPPES lists Colorado license number 52525, 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 Ian A. Lang, DO prescribe under Medicare Part D?
In 2024, Ian A. Lang, DO had 5,957 Medicare Part D claims for 537 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.