NPPES file of Aug 9, 2026

Natalie Ann Siegel, SWC

Clinical Social Worker · Denver, CO

Natalie Ann Siegel, SWC is a clinical social worker with a practice address in Denver, Colorado, and NPI 1548082654, issued on Oct 29, 2024. Check the license (Colorado CSW.09932713, as entered in NPPES) with the Colorado board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1548082654
Name
Natalie Ann Siegel
Credential
SWC
Primary taxonomy
Clinical Social Worker 1041C0700X
License number
CSW.09932713 CO
Self-reported in NPPES; status is on the state search
Practice location
5250 Leetsdale Dr Ste 300, Denver, CO 80246
Phone
(720) 782-5018
Enumerated
Oct 29, 2024
Record last updated
Mar 5, 2026
Medicare enrollment
Enrolled (PECOS I20260312002886); accepts Medicare assignment
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). Enrollment, assignment, school and telehealth: CMS Doctors and Clinicians file, Aug 2026. A record is not a license: verify it with the state board.
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Also registered at 5250 Leetsdale Dr Ste 300

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Omar Abuzaineh, DMDDentist1750709051
  2. Natalie Kallhoff, PHARMDAmbulatory Care Pharmacist1740937424
  3. Megan Lipp, PHARMDPharmacist1508302894
  4. Daniel Scales, PHARM DPharmacist1134404874
  5. Daniel Taylor, PA-CMedical Physician Assistant1629549407
  6. Melina Tseng, DDSDentist1952297053

Verify Natalie Ann Siegel in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Colorado board licenses this profession
    Search for license CSW.09932713
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Colorado license search

PlainDoctor does not match the HHS-OIG exclusion list to individual records: most entries carry no NPI. Search the OIG exclusion list by name.

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Bills Medicare through one group practice

  1. Vivent Health IncDenver, CO

Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).

Natalie Ann Siegel among 7,356 clinical social worker records in Colorado

Natalie Ann Siegel, SWC is one of 7,356 clinical social worker records with a practice address in Colorado. 14% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2024, is newer than 86% of them.

  • NPI issued2024 · 86% of these records are older, 8% newer
  • In a Medicare fileYes · 14% of these records are
  • In the CMS Doctors and Clinicians fileYes · 21% of these records are
  • Graduated2022 · median 2014 among the 1,575 with a school on file
  • Record last updated2026 · 46% of these records were not updated in five years or more

Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1041C0700X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).

1,836 clinical social worker records list a practice address in Denver

They are 1,836 of the 25,068 NPPES records with a practice address in Denver, and 7,356 clinical social worker records in Colorado.

The 8 clinical social worker records with the nearest ZIP codes

  1. Eleanor Alden, LCSWDenver, CO 802461487791208
  2. Darlene Ferrentino, LCSW-RDenver, CO 802461386877959
  3. Mary Fortson, PHD, LCSWDenver, CO 802461386916112
  4. Naomi Greenstone, LCSWGlendale, CO 802461508010869
  5. Pam Hurley, LCSWDenver, CO 802461801029475
  6. Barbara Hyatt, LCSWDenver, CO 802461538289251
  7. Carol Ilvonen, MSW, LCSWDenver, CO 802461497967830
  8. Linda Lewis, MSW,LCSWDenver, CO 802461508039181

Common questions

What is Natalie Ann Siegel, SWC's NPI number?

Natalie Ann Siegel, SWC's National Provider Identifier (NPI) is 1548082654, issued on Oct 29, 2024. An NPI identifies a provider in billing; it is not a license.

Where is Natalie Ann Siegel, SWC located?

The NPPES record lists a practice address at 5250 Leetsdale Dr Ste 300, Denver, CO, 80246. Phone: (720) 782-5018. Providers update this record themselves, so call before visiting.

How can I verify Natalie Ann Siegel, SWC's license?

NPPES lists Colorado license number CSW.09932713, as entered by the provider. 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. 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.