Marie Stockwin, PA-C
NPI 1306171863 · Physician Assistant · Frederick, MD
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Marie Stockwin, PA-C is a Physician Assistant provider in Frederick, MD (NPI 1306171863).
Provider details
- NPI number
- 1306171863
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PA-C
- Sex
- Female
- Sole proprietor
- No
- License
- C04073 (MD)
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 tenure25% of score
16 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
15 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
265 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
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 .
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) |
|---|---|---|
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 | 127 | $41 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 68 | $107 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 50 | $66 |
| Initial Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99221 | 20 | $69 |
Typical Medicare-allowed amounts for these services range $41–$107 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$92 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
Additional practice locations (14)
- 16403 Old Emmitsburg RdEmmitsburg, MD 21727-8929Phone: (240) 215-6310
- 7211 Bank CtFrederick, MD 21703-8483Phone: (240) 215-6310
- 1562 Opossumtown PikeFrederick, MD 21702-4920Phone: (240) 215-6310
- 3430 Worthington BlvdFrederick, MD 21704-7017Phone: (240) 215-6310
- 141 Thomas Johnson DrFrederick, MD 21702-4502Phone: (301) 846-0100
- 75 Thomas Johnson DrFrederick, MD 21702-4895Phone: (240) 215-6310
- 230 W Patrick StFrederick, MD 21701-6945Phone: (240) 215-6310
- 501 W 7th StFrederick, MD 21701-4586Phone: (240) 215-6310
- 400 W 7th StFrederick, MD 21701-4506Phone: (240) 215-6310
Registry dates
- Enumerated
- 2009-10-15
- Last updated
- 2023-01-09
- Certified
- 2023-01-09
Frequently asked questions
- What is Marie Stockwin's NPI number?
- Marie Stockwin's National Provider Identifier (NPI) is 1306171863, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Marie Stockwin's specialty?
- Marie Stockwin is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Marie Stockwin located?
- Marie Stockwin's practice location on file with NPPES is 194 Thomas Johnson Dr, Frederick, MD 21702-4679.
- What is Marie Stockwin's phone number?
- The practice phone number listed in the NPPES registry for Marie Stockwin is (240) 215-6310.
- Does Marie Stockwin accept Medicare?
- Marie Stockwin is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Marie Stockwin's NPI active?
- Yes — Marie Stockwin's NPI (1306171863) is active in the NPPES registry as of the last update on 2023-01-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.