Katherine Maas
Psychiatric/Mental Health Nurse Practitioner · Arnold, MD
Katherine Maas is a psychiatric/mental health nurse practitioner with a practice address in Arnold, Maryland, and NPI 1831701317, issued on Aug 17, 2020. Check the license (Maryland R237827, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Katherine Maas
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- R237827 MD
Self-reported in NPPES; status is on the state search - Practice location
- 1511 Ritchie Hwy Ste 202, Arnold, MD 21012
- Phone
- (410) 757-2077
- Enumerated
- Aug 17, 2020
- Record last updated
- Aug 17, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20201112000447); accepts Medicare assignment
- Telehealth
- Offers telehealth (CMS)
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 2,373 in Maryland → Look up another NPI →
Also registered at 1511 Ritchie Hwy Ste 202
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Jillian SolomonClinical Psychologist1598433286
- Stacy Steiner, LCSW-CClinical Social Worker1174146567
Verify Katherine Maas in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license R237827Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
79% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
193 Medicare Part D claims for 22 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.
Most prescribed
- Clonazepam15 claims
- Escitalopram Oxalate14 claims
- Aripiprazole11 claims
- Dextroamphetamine-Amphetamine11 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.
Bills Medicare through one group practice
- Arundel Mental Health Professionals LCArnold, MD
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Katherine Maas among 2,373 psychiatric/mental health nurse practitioner records in Maryland
Katherine Maas is one of 2,373 psychiatric/mental health nurse practitioner records with a practice address in Maryland. 71% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2020, is newer than 39% of them.
- NPI issued2020 · 39% of these records are older, 53% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2020 · median 2021 among the 1,409 with a school on file
- Record last updated2020 · 19% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363LP0808X and a Maryland practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
4 psychiatric/mental health nurse practitioner records list a practice address in Arnold
They are 4 of the 307 NPPES records with a practice address in Arnold, and 2,373 psychiatric/mental health nurse practitioner records in Maryland.
All 2,373 in Maryland → Every provider in Arnold → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- John Bryan Annang, CRNPArnold, MD 210121003623927
- Linda EdeityArnold, MD 210121619468139
- Kelly Hunt, APRN, FNP-CArnold, MD 210121346691896
- Titilayo Akinsola, CRNP, PMHNPBel Air, MD 210141902371321
- Kimberly Ferrara, DNP, PMHNP-BCBel Air, MD 210141760933972
- Kathryn Malenfant, DNPBel Air, MD 210141689983090
- Kristen McGaha, NPBel Air, MD 210141477898591
- Suzette Antoinette NelsonBel Air, MD 210141942740287
Common questions
What is Katherine Maas's NPI number?
Katherine Maas's National Provider Identifier (NPI) is 1831701317, issued on Aug 17, 2020. An NPI identifies a provider in billing; it is not a license.
Where is Katherine Maas located?
The NPPES record lists a practice address at 1511 Ritchie Hwy Ste 202, Arnold, MD, 21012. Phone: (410) 757-2077. Providers update this record themselves, so call before visiting.
How can I verify Katherine Maas's license?
NPPES lists Maryland license number R237827, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Katherine Maas prescribe under Medicare Part D?
In 2024, Katherine Maas had 193 Medicare Part D claims for 22 beneficiaries; the average among psychiatric/mental health nurse practitioner prescribers was 906. 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.