Mary Holthaus, PA
Medical Physician Assistant · Annapolis, MD
Mary Holthaus, PA is a medical physician assistant with a practice address in Annapolis, Maryland, and NPI 1285296913, issued on Jul 2, 2019. Check the license (Maryland C07349, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Holthaus
- Credential
- PA
- Primary taxonomy
- Medical Physician Assistant 363AM0700X
- License number
- C07349 MD
Self-reported in NPPES; status is on the state search - Practice location
- 122 Defense Hwy Ste 210, Annapolis, MD 21401
- Phone
- (410) 266-9694
- Enumerated
- Jul 2, 2019
- Record last updated
- Jan 19, 2023
- Medicare enrollment
- Enrolled (PECOS I20240306004444); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest medical physician assistant records → All 871 in Maryland → Look up another NPI →
Also registered at 122 Defense Hwy Ste 210
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Kristina Reid, PA-CMedical Physician Assistant1215473087
- Karen Scott, PAMedical Physician Assistant1689727141
Verify Mary Holthaus in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license C07349Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
58% fewer Medicare Part D claims than the average medical physician assistant in 2024
486 Medicare Part D claims for 127 beneficiaries, against an average of 1,148 among the 23,801 providers of this specialty who prescribed in Part D.
Most prescribed
- Donepezil Hcl58 claims
- Memantine Hcl37 claims
- Fludrocortisone Acetate35 claims
- Gabapentin29 claims
- Emgality Pen25 claims
- Pyridostigmine Bromide22 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: $192.14
5 payments; by number, the most common kind was food and beverage; the largest payer was Abbvie Inc. The 16,165 providers of this specialty with any payment received $1,055.00 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.
Bills Medicare through one group practice
- Mcv Associated PhysiciansRichmond, VA
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Mary Holthaus among 871 medical physician assistant records in Maryland
Mary Holthaus, PA is one of 871 medical physician assistant records with a practice address in Maryland. 73% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 85% of them.
- NPI issued2019 · 85% of these records are older, 13% newer
- In a Medicare fileYes · 73% of these records are
- In the CMS Doctors and Clinicians fileYes · 54% of these records are
- Graduated2019 · median 2012 among the 469 with a school on file
- Record last updated2023 · 63% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363AM0700X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Medical Physician Assistant providers in Maryland
There are 871 medical physician assistant records in Maryland.
All 871 in Maryland → Every provider in Annapolis → Medical Physician Assistant nationwide →
The 8 medical physician assistant records with the nearest ZIP codes
- Lisa Barikian, PA-CAnnapolis, MD 214011336373042
- Ilene Bloom, PACAnnapolis, MD 214011790851996
- Robert Crowder, PAAnnapolis, MD 214011932108768
- Jeffrey Fine, PA-CAnnapolis, MD 214011164456281
- Tangela Gaines, PA-CAnnapolis, MD 214011598884207
- Karen Hartke, PAAnnapolis, MD 214011891785911
- James Heins, PAAnnapolis, MD 214011568545515
- Franklin Hepfer, P.A.Annapolis, MD 214011720053069
Common questions
What is Mary Holthaus, PA's NPI number?
Mary Holthaus, PA's National Provider Identifier (NPI) is 1285296913, issued on Jul 2, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Mary Holthaus, PA located?
The NPPES record lists a practice address at 122 Defense Hwy Ste 210, Annapolis, MD, 21401. Phone: (410) 266-9694. Providers update this record themselves, so call before visiting.
How can I verify Mary Holthaus, PA's license?
NPPES lists Maryland license number C07349, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Holthaus, PA prescribe under Medicare Part D?
In 2024, Mary Holthaus, PA had 486 Medicare Part D claims for 127 beneficiaries; the average among medical physician assistant prescribers was 1,148. 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.