Alden Posner Zwerling, M.D.
Family Medicine Physician · Denver, CO
Alden Posner Zwerling, M.D. is a family medicine physician with a practice address in Denver, Colorado, and NPI 1316987852, issued on Jun 6, 2006. Check the license (Colorado DR.0069761, as entered in NPPES) on the Colorado Medical Board; the Medicare figures below come from public CMS files.
- Name
- Alden Posner Zwerling
- Credential
- M.D.
- Primary taxonomy
- Family Medicine Physician 207Q00000X
- License numbers
- DR.0069761 CO
G48415 CA
ME90332 FL
Self-reported in NPPES; status is on the state search - Practice location
- 2087 S Federal Blvd, Denver, CO 80219
- Phone
- (720) 463-6754
- Enumerated
- Jun 6, 2006
- Record last updated
- Jan 6, 2025
- Fax
- (720) 640-3312
- Medicare enrollment
- Enrolled (PECOS I20231010003015); may accept Medicare assignment
- Medical or professional school
- Virginia Commonwealth University, School Of Medicine, 1979
- Entity
- Type 1 · individual
8 nearest family medicine physician records → All 3,563 in Colorado → Look up another NPI →
Also registered at 2087 S Federal Blvd
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Zoe Hill, APRNNurse Practitioner1457302382
- Madison O'Connor, LCSWClinical Social Worker1467134924
Verify Alden Posner Zwerling in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersColorado Medical Board
Search for license DR.0069761Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
17% more Medicare Part D claims than the average family medicine physician in 2024
4,152 Medicare Part D claims for 400 beneficiaries, against an average of 3,544 among the 117,163 providers of this specialty who prescribed in Part D. Brand-name drugs were 13% of claims. 400 claims were for opioids.
Most prescribed
- Atorvastatin Calcium299 claims
- Losartan Potassium161 claims
- Amlodipine Besylate158 claims
- Tramadol Hcl125 claims
- Levothyroxine Sodium115 claims
- Lisinopril113 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
- Oak Street Health Physicians Group OF Colorado PLLCCommerce City, CO
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Alden Posner Zwerling among 3,563 family medicine physician records in Colorado
Alden Posner Zwerling, M.D. is one of 3,563 family medicine physician records with a practice address in Colorado. 76% 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 12% of them.
- NPI issued2006 · 12% of these records are older, 56% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileYes · 58% of these records are
- Graduated1979 · median 2008 among the 2,077 with a school on file
- Record last updated2025 · 58% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207Q00000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
457 family medicine physician records list a practice address in Denver
They are 457 of the 25,068 NPPES records with a practice address in Denver, and 3,563 family medicine physician records in Colorado.
All 3,563 in Colorado → Every provider in Denver → Family Medicine Physician nationwide →
The 8 family medicine physician records with the nearest ZIP codes
- Katherine Anderson, MDDenver, CO 802191356360937
- Abigail Bryant-Heidebrecht, MDDenver, CO 802191396321485
- Shawnecca Burke, MDDenver, CO 802191912469206
- Kurt Cook, M.D.Denver, CO 802191417010398
- Nicholas Kaufman, M.D.Denver, CO 802191356920391
- Allison Lindbloom, MDDenver, CO 802191285121368
- Cuong Ngo, M.D.Denver, CO 802191629150859
- Khoi Nguyen, D.O.Denver, CO 802191295708758
Common questions
What is Alden Posner Zwerling, M.D.'s NPI number?
Alden Posner Zwerling, M.D.'s National Provider Identifier (NPI) is 1316987852, issued on Jun 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Alden Posner Zwerling, M.D. located?
The NPPES record lists a practice address at 2087 S Federal Blvd, Denver, CO, 80219. Phone: (720) 463-6754. Providers update this record themselves, so call before visiting.
How can I verify Alden Posner Zwerling, M.D.'s license?
NPPES lists Colorado license number DR.0069761, 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 Alden Posner Zwerling, M.D. prescribe under Medicare Part D?
In 2024, Alden Posner Zwerling, M.D. had 4,152 Medicare Part D claims for 400 beneficiaries; the average among family medicine physician prescribers was 3,544. 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.