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
- Entity
- Type 1 · individual
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.
- Anna Batyan, LCPCProfessional Counselor1407506199
- Kelini Coker, LCPCProfessional Counselor1558909333
- Devin Kiessling, LCSW-CClinical Social Worker1437744893
- Scott Smith, LPPsychologist1235120536
- 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
78% 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 895 among the 22,437 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.
One hospital or facility affiliation
- Arundel Mental Health Professionals LCArnold, MD
Source: CMS Doctors and Clinicians affiliations; Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Psychiatric/Mental Health Nurse Practitioner providers in Maryland
There are 1,912 psychiatric/mental health nurse practitioner records in Maryland.
Other psychiatric/mental health nurse practitioner records in Maryland
- Elisabeth Abamina-Lette, PMHNP-BCBaltimore, MD1578210035
- Christina Abange, NPGreenbelt, MD1467193854
- Itoro AbataiBaltimore, MD1245839653
- Ama Abban, PMHNPJessup, MD1184488017
- Lindsay Abbott, PMHNP-BCBaltimore, MD1205264116
- Adebola Abe-Fapohunda, PMHNP-BCUpper Marlboro, MD1083227177
- Genet Abera, CRNP-PMHNPSilver Spring, MD1346979135
- Karen AbernathyBaltimore, MD1588032122
- Zekarias AbessaSevern, MD1659198729
- Olayinka Abiodun, PMHNPElkton, MD1093661787
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 895. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), loaded Aug 27, 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.
Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 27, 2026.