Margaret Callahan
Social Worker · Littleton, CO
Margaret Callahan is a social worker with a practice address in Littleton, Colorado, and NPI 1689215808, issued on Sep 30, 2019. Check the license with the Colorado board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Margaret Callahan
- Primary taxonomy
- Social Worker 104100000X
- Practice location
- 61 W Davies Ave N, Littleton, CO 80120
- Phone
- (720) 707-6751
- Enumerated
- Sep 30, 2019
- Record last updated
- Sep 30, 2019 (not updated in 7 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest social worker records → All 1,796 in Colorado → Look up another NPI →
Also registered at 61 W Davies Ave N
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shauna AdamsClinical Social Worker1477920643
- Jesse Andrews, MAMental Health Counselor1083782262
- Diana AnkenbruckClinical Social Worker1437755493
- Nancy BabbittStudent in an Organized Health Care Education/Training Program1033360854
- Katja BabcockClinical Social Worker1417412529
- Edward BauerCounselor1316079445
Verify Margaret Callahan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this professionCheck the board
- 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Margaret Callahan among 1,796 social worker records in Colorado
Margaret Callahan is one of 1,796 social worker records with a practice address in Colorado. 3% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2019, is newer than 40% of them.
- NPI issued2019 · 40% of these records are older, 56% newer
- In a Medicare fileNo · 3% of these records are
- In the CMS Doctors and Clinicians fileNo · 5% of these records are
- Record last updated2019 · 44% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 104100000X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Social Worker providers in Colorado
There are 1,796 social worker records in Colorado. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 1,796 in Colorado → Every provider in Littleton → Social Worker nationwide →
The 8 social worker records with the nearest ZIP codes
- Shannon Adams, LCSWLittleton, CO 801201295219889
- Emmi Adler, MSWLittleton, CO 801201861862369
- Tracy CarrollLittleton, CO 801201588042238
- Devon CozensLittleton, CO 801201265837470
- Gerianna EchelbergerLittleton, CO 801201508295924
- Molly JacobsonLittleton, CO 801201356742381
- Jacqueline Lane, M.S.W, L.C.S.W.Littleton, CO 801201578795571
- Julie MoeLittleton, CO 801201588895437
Common questions
What is Margaret Callahan's NPI number?
Margaret Callahan's National Provider Identifier (NPI) is 1689215808, issued on Sep 30, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Margaret Callahan located?
The NPPES record lists a practice address at 61 W Davies Ave N, Littleton, CO, 80120. Phone: (720) 707-6751. Providers update this record themselves, so call before visiting.
How can I verify Margaret Callahan's license?
Search the Colorado board that licenses this profession; the NPPES record confirms identity 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. 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.