Mark Schwartz, MD
NPI 1881622629 · Internal Medicine Physician · Boulder, CO
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Schwartz, MD is a Internal Medicine Physician provider in Boulder, CO (NPI 1881622629).
Provider details
- NPI number
- 1881622629
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 37095 (CO)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure33% of score
20 yrs in NPPES registry
- Profile completeness33% of score
100% of core fields populated
- Practice footprint20% of score
1 documented practice location
- Open Payments transparency13% of score
Has Open Payments disclosures (2024)
Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our methodology.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 91 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Bictegrav/Emtricit/Tenofov Alabrand: Biktarvy | 417 | 48 |
| Dolutegravir Sodiumbrand: Tivicay | 290 | 30 |
| Emtricitabine/Tenofov Alafenambrand: Descovy | 166 | 18 |
| Atorvastatin Calcium | 157 | 41 |
| Lisinopril | 145 | 33 |
| Darunavir/Cob/Emtri/Tenof Alafbrand: Symtuza | 100 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$74 across 1 record (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-06-29
- Last updated
- 2025-10-22
- Certified
- 2025-10-22
Frequently asked questions
- What is Mark Schwartz's NPI number?
- Mark Schwartz's National Provider Identifier (NPI) is 1881622629, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Schwartz's specialty?
- Mark Schwartz is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Schwartz located?
- Mark Schwartz's practice location on file with NPPES is 2525 13th St, Boulder, CO 80304-4104.
- What is Mark Schwartz's phone number?
- The practice phone number listed in the NPPES registry for Mark Schwartz is (303) 665-3036.
- Does Mark Schwartz accept Medicare?
- Mark Schwartz is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Schwartz's NPI active?
- Yes — Mark Schwartz's NPI (1881622629) is active in the NPPES registry as of the last update on 2025-10-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.