Mackenzie Jassowski, PA-C
NPI 1689261620 · Physician Assistant · San Francisco, CA
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mackenzie Jassowski, PA-C is a Physician Assistant provider in San Francisco, CA (NPI 1689261620).
Provider details
- NPI number
- 1689261620
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- 59681 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
5 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
900 Medicare services, 2024 (ranked within specialty)
Medicare volume is ranked against active providers in the same specialty. 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 does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 293 | $92 |
| X-Ray of Wrist, Minimum of 3 Views73110 | 151 | $46 |
| X-Ray of Hand, Minimum of 3 Views73130 | 79 | $42 |
| Injection Into Tendon Or Ligament20550 | 77 | $58 |
| New Patient Office Or Other Outpatient Visit With Low Level of Medical Decision Making, If Using Time, 30 Minutes Or More99203 | 66 | $113 |
| Aspiration And/Or Injection of Fluid From Small Joint20600 | 59 | $58 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 6 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 152 | 141 |
| Ondansetron Hcl | 144 | 136 |
| Oxycodone Hcl/Acetaminophenbrand: Oxycodone-Acetaminophen | 60 | 57 |
| Tramadol Hcl | 22 | 20 |
| Gabapentin | 14 | — |
| Cephalexin | 12 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they include cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Practice location
Mailing address
Registry dates
- Enumerated
- 2020-12-23
- Last updated
- 2021-12-17
- Certified
- 2021-12-17
Frequently asked questions
- What is Mackenzie Jassowski's NPI number?
- Mackenzie Jassowski's National Provider Identifier (NPI) is 1689261620, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mackenzie Jassowski's specialty?
- Mackenzie Jassowski is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Mackenzie Jassowski located?
- Mackenzie Jassowski's practice location on file with NPPES is 3838 California St Rm 715, San Francisco, CA 94118-1509.
- What is Mackenzie Jassowski's phone number?
- The practice phone number listed in the NPPES registry for Mackenzie Jassowski is (415) 592-2091.
- Does Mackenzie Jassowski accept Medicare?
- Mackenzie Jassowski is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mackenzie Jassowski's NPI active?
- Yes — Mackenzie Jassowski's NPI (1689261620) is active in the NPPES registry as of the last update on 2021-12-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.