Karen Lynn Shannon, PAC
Physician Assistant · Pasadena, MD
Karen Lynn Shannon, PAC is a physician assistant with a practice address in Pasadena, Maryland, and NPI 1629137674, issued on Dec 6, 2006. Check the license (Maryland C01422, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Karen Lynn Shannon
- Credential
- PAC
- Primary taxonomy
- Physician Assistant 363A00000X
- License number
- C01422 MD
Self-reported in NPPES; status is on the state search - Practice location
- 8028 Ritchie Hwy, Pasadena, MD 21122
- Phone
- (410) 768-8600
- Enumerated
- Dec 6, 2006
- Record last updated
- Jul 17, 2013 (not updated in 13 years: call before relying on the address or phone)
- Fax
- (410) 768-1676
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 3,224 in Maryland → Look up another NPI →
Also registered at 8028 Ritchie Hwy
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Karen Lynn Shannon in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license C01422Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
2.2 times the Medicare Part D claims of the average physician assistant in 2024
1,787 Medicare Part D claims for 176 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D.
Most prescribed
- Atorvastatin Calcium141 claims
- Rosuvastatin Calcium137 claims
- Amlodipine Besylate121 claims
- Lisinopril68 claims
- Lisinopril-Hydrochlorothiazide64 claims
- Losartan Potassium63 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $64.35
3 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 64,719 providers of this specialty with any payment received $841.65 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Karen Lynn Shannon among 3,224 physician assistant records in Maryland
Karen Lynn Shannon, PAC is one of 3,224 physician assistant records with a practice address in Maryland. 76% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 3% of them.
- NPI issued2006 · 3% of these records are older, 83% newer
- In a Medicare fileYes · 76% of these records are
- In the CMS Doctors and Clinicians fileNo · 61% of these records are
- Record last updated2013 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
20 physician assistant records list a practice address in Pasadena
They are 20 of the 537 NPPES records with a practice address in Pasadena, and 3,224 physician assistant records in Maryland.
All 3,224 in Maryland → Every provider in Pasadena → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Nora Bianco, PA-CPasadena, MD 211221851546444
- Amber BrubakerPasadena, MD 211221780135822
- Matthew Castagna, PAPasadena, MD 211221932676756
- Karen Diaz, PA-CPasadena, MD 211221639602147
- Vivian Duru, PAPasadena, MD 211221447529904
- Sharon Hill, PA-CPasadena, MD 211221578701603
- Sarah Jones, PAPasadena, MD 211221275687618
- Alyson Lang, PA-CPasadena, MD 211221023352366
Common questions
What is Karen Lynn Shannon, PAC's NPI number?
Karen Lynn Shannon, PAC's National Provider Identifier (NPI) is 1629137674, issued on Dec 6, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Karen Lynn Shannon, PAC located?
The NPPES record lists a practice address at 8028 Ritchie Hwy, Pasadena, MD, 21122. Phone: (410) 768-8600. Providers update this record themselves, so call before visiting.
How can I verify Karen Lynn Shannon, PAC's license?
NPPES lists Maryland license number C01422, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Karen Lynn Shannon, PAC prescribe under Medicare Part D?
In 2024, Karen Lynn Shannon, PAC had 1,787 Medicare Part D claims for 176 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.