Karen Shannon, PAC
NPI 1629137674 · Physician Assistant · Pasadena, MD
Enrolled with Medicare as Practitioner - Physician Assistant · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Karen Shannon, PAC is a Physician Assistant provider in Pasadena, MD (NPI 1629137674).
Provider details
- NPI number
- 1629137674
- Entity type
- Individual
- Primary specialty
- Physician AssistantPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- PAC
- Sex
- Female
- Sole proprietor
- No
- License
- C01422 (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 tenure33% of score
19 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 · 33 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 141 | 40 |
| Rosuvastatin Calcium | 137 | 41 |
| Amlodipine Besylate | 121 | 35 |
| Lisinopril | 68 | 19 |
| Lisinopril/Hydrochlorothiazidebrand: Lisinopril-Hydrochlorothiazide | 64 | 17 |
| Losartan Potassium | 63 | 20 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$64 across 3 records (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
- 2006-12-06
- Last updated
- 2013-07-17
Frequently asked questions
- What is Karen Shannon's NPI number?
- Karen Shannon's National Provider Identifier (NPI) is 1629137674, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Karen Shannon's specialty?
- Karen Shannon is listed in the NPPES registry with a primary specialty of Physician Assistant (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Karen Shannon located?
- Karen Shannon's practice location on file with NPPES is 8028 Ritchie Hwy, Pasadena, MD 21122.
- What is Karen Shannon's phone number?
- The practice phone number listed in the NPPES registry for Karen Shannon is (410) 768-8600.
- Does Karen Shannon accept Medicare?
- Karen Shannon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Karen Shannon's NPI active?
- Yes — Karen Shannon's NPI (1629137674) is active in the NPPES registry as of the last update on 2013-07-17.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.