Mark L. Sipowicz, REGISTERED THERAPIST
Mental Health Counselor · Boulder, CO
Mark L. Sipowicz, REGISTERED THERAPIST is a mental health counselor with a practice address in Boulder, Colorado, and NPI 1205480845, issued on Aug 1, 2019. Check the license (Colorado 0107125, as entered in NPPES) with the Colorado board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- Mark L. Sipowicz
- Credential
- REGISTERED THERAPIST
- Primary taxonomy
- Mental Health Counselor 101YM0800X
- License number
- 0107125 CO
Self-reported in NPPES; status is on the state search - Practice location
- 100 Arapahoe Avenue, Boulder, CO 80302
- Phone
- (650) 228-8286
- Enumerated
- Aug 1, 2019
- Record last updated
- Aug 1, 2019 (not updated in 7 years: call before relying on the address or phone)
- Entity
- Type 1 · individual
8 nearest mental health counselor records → All 8,626 in Colorado → Look up another NPI →
Also registered at 100 Arapahoe Avenue
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Chloe WrightPsychologist1437561966
Verify Mark L. Sipowicz in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Colorado board licenses this profession
Search for license 0107125Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Mark L. Sipowicz among 8,626 mental health counselor records in Colorado
Mark L. Sipowicz, REGISTERED THERAPIST is one of 8,626 mental health counselor records with a practice address in Colorado. 4% 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 54% of them.
- NPI issued2019 · 54% of these records are older, 42% newer
- In a Medicare fileNo · 4% of these records are
- In the CMS Doctors and Clinicians fileNo · 7% of these records are
- Record last updated2019 · 54% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 101YM0800X and a Colorado practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
1,009 mental health counselor records list a practice address in Boulder
They are 1,009 of the 5,635 NPPES records with a practice address in Boulder, and 8,626 mental health counselor records in Colorado. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 8,626 in Colorado → Every provider in Boulder → Mental Health Counselor nationwide →
The 8 mental health counselor records with the nearest ZIP codes
- Keith AndresenBoulder, CO 803021225119720
- Ernest CepedaBoulder, CO 803021356490874
- Sara Cohen, MA, LPCBoulder, CO 803021437207693
- Jennifer Epstein, MA, LPC, R-DMTBoulder, CO 803021801948971
- Jessica Evers Killebrew, PSY.D.Boulder, CO 803021346368396
- Julie Kintzing, LCSWBoulder, CO 803021417961301
- Robert KoppeBoulder, CO 803021013130822
- Ann Norris, MSW, LCSWBoulder, CO 803021427196690
Common questions
What is Mark L. Sipowicz, REGISTERED THERAPIST's NPI number?
Mark L. Sipowicz, REGISTERED THERAPIST's National Provider Identifier (NPI) is 1205480845, issued on Aug 1, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Mark L. Sipowicz, REGISTERED THERAPIST located?
The NPPES record lists a practice address at 100 Arapahoe Avenue, Boulder, CO, 80302. Phone: (650) 228-8286. Providers update this record themselves, so call before visiting.
How can I verify Mark L. Sipowicz, REGISTERED THERAPIST's license?
NPPES lists Colorado license number 0107125, 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. 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.