Nicola Clarke Wallen, PMHNP
Psychiatric/Mental Health Nurse Practitioner · Waldorf, MD
Nicola Clarke Wallen, PMHNP is a psychiatric/mental health nurse practitioner with a practice address in Waldorf, Maryland, and NPI 1659413615, issued on Feb 13, 2007. Check the license (Maryland R190596, as entered in NPPES) with the Maryland board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Nicola Clarke Wallen
- Credential
- PMHNP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- R190596 MD
Self-reported in NPPES; status is on the state search - Practice location
- 3261 Old Washington RD Ste 2020, Waldorf, MD 20602
- Phone
- (301) 960-8930
- Enumerated
- Feb 13, 2007
- Record last updated
- Aug 25, 2020 (not updated in 6 years: call before relying on the address or phone)
- Medicare enrollment
- Enrolled (PECOS I20200828000015); 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 3261 Old Washington RD Ste 2020
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Shante Ashe, LCPCCounselor1295009777
- Anjanette BluntClinical Psychologist1912612748
- Marie Charles, CRNP-FNP-PMHNP-BCPsychiatric/Mental Health Nurse Practitioner1376048348
- China ColemanClinical Laboratory Director (Non-physician)1649945734
- Ashley Corbett, LICSW, LCSW-CClinical Social Worker1669157715
- Deirdre CullumProfessional Counselor1235445966
Verify Nicola Clarke Wallen in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Maryland board licenses this profession
Search for license R190596Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
93% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
65 Medicare Part D claims, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D. Brand-name drugs were 0% of claims.
Most prescribed
- Clonazepam14 claims
- Mirtazapine12 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.
Nicola Clarke Wallen among 2,373 psychiatric/mental health nurse practitioner records in Maryland
Nicola Clarke Wallen, PMHNP 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 2007, is newer than 2% of them.
- NPI issued2007 · 2% of these records are older, 96% newer
- In a Medicare fileYes · 71% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated2014 · 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).
40 psychiatric/mental health nurse practitioner records list a practice address in Waldorf
They are 40 of the 1,272 NPPES records with a practice address in Waldorf, and 2,373 psychiatric/mental health nurse practitioner records in Maryland.
All 2,373 in Maryland → Every provider in Waldorf → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Marie Charles, CRNP-FNP-PMHNP-BCWaldorf, MD 206021376048348
- Andrea Davies, PMHNP-BCWaldorf, MD 206021902550387
- Tamu Escalera, PMHNP-BCWaldorf, MD 206021215216999
- Heather Kennedy, PMHNP-BCWaldorf, MD 206021962763912
- Samuel Koroma, PMHNPWaldorf, MD 206021790324960
- Jane Kutsushi, NPWaldorf, MD 206021710433693
- Carmen Murray, APRNWaldorf, MD 206021801437629
- Daniel NdamukongWaldorf, MD 206021447514187
Common questions
What is Nicola Clarke Wallen, PMHNP's NPI number?
Nicola Clarke Wallen, PMHNP's National Provider Identifier (NPI) is 1659413615, issued on Feb 13, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Nicola Clarke Wallen, PMHNP located?
The NPPES record lists a practice address at 3261 Old Washington RD Ste 2020, Waldorf, MD, 20602. Phone: (301) 960-8930. Providers update this record themselves, so call before visiting.
How can I verify Nicola Clarke Wallen, PMHNP's license?
NPPES lists Maryland license number R190596, as entered by the provider. Search the Maryland board that licenses this profession; the NPPES record confirms identity only.
How much does Nicola Clarke Wallen, PMHNP prescribe under Medicare Part D?
In 2024, Nicola Clarke Wallen, PMHNP had 65 Medicare Part D claims; 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.