Amber Marshall
NPI 1659829364 · Physician Assistant · Madison, WI
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Amber Marshall is a Physician Assistant provider in Madison, WI (NPI 1659829364).
Provider details
- NPI number
- 1659829364
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
- Surgical Physician Assistant363AS0400X
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
9 yrs in NPPES registry
- Profile completeness38% of score
83% of core fields populated
- Practice footprint23% of score
1 documented practice location
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 · 2 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Oxycodone Hcl | 21 | 20 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 11 | 11 |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude 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 no Part D record, 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
- 2016-09-12
- Last updated
- 2021-01-15
- Certified
- 2021-01-15
Frequently asked questions
- What is Amber Marshall's NPI number?
- Amber Marshall's National Provider Identifier (NPI) is 1659829364, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Amber Marshall's specialty?
- Amber Marshall is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Amber Marshall located?
- Amber Marshall's practice location on file with NPPES is 600 Highland Ave, Madison, WI 53792-0001.
- What is Amber Marshall's phone number?
- The practice phone number listed in the NPPES registry for Amber Marshall is (608) 263-6190.
- Does Amber Marshall accept Medicare?
- Amber Marshall is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Amber Marshall's NPI active?
- Yes — Amber Marshall's NPI (1659829364) is active in the NPPES registry as of the last update on 2021-01-15.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.