Mary Ellen Knopf, PMHNP
Psychiatric/Mental Health Nurse Practitioner · Belmont, CA
Mary Ellen Knopf, PMHNP is a psychiatric/mental health nurse practitioner with a practice address in Belmont, California, and NPI 1316184187, issued on Jan 15, 2009. Check the license (California 18552, as entered in NPPES) with the California board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Mary Ellen Knopf
- Credential
- PMHNP
- Primary taxonomy
- Psychiatric/Mental Health Nurse Practitioner 363LP0808X
- License number
- 18552 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1012 Villa Ave, Belmont, CA 94002
- Phone
- (650) 654-9727
- Enumerated
- Jan 15, 2009
- Record last updated
- Nov 2, 2024
- Entity
- Type 1 · individual
8 nearest psychiatric/mental health nurse practitioner records → All 4,226 in California → Look up another NPI →
Verify Mary Ellen Knopf in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 18552Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
86% fewer Medicare Part D claims than the average psychiatric/mental health nurse practitioner in 2024
124 Medicare Part D claims for 20 beneficiaries, against an average of 906 among the 30,717 providers of this specialty who prescribed in Part D.
Most prescribed
- Hydroxyzine Hcl17 claims
- Risperidone16 claims
- Mirtazapine13 claims
- Gabapentin11 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: $48.70
1 payment: food and beverage; the largest payer was Boston Scientific Corporation. The 23,362 providers of this specialty with any payment received $1,027.77 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.
Mary Ellen Knopf among 4,226 psychiatric/mental health nurse practitioner records in California
Mary Ellen Knopf, PMHNP is one of 4,226 psychiatric/mental health nurse practitioner records with a practice address in California. 62% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2009, is newer than 9% of them.
- NPI issued2009 · 9% of these records are older, 90% newer
- In a Medicare fileYes · 62% of these records are
- In the CMS Doctors and Clinicians fileNo · 46% of these records are
- Record last updated2024 · 16% 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 California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Psychiatric/Mental Health Nurse Practitioner providers in California
There are 4,226 psychiatric/mental health nurse practitioner records in California.
All 4,226 in California → Every provider in Belmont → Psychiatric/Mental Health Nurse Practitioner nationwide →
The 8 psychiatric/mental health nurse practitioner records with the nearest ZIP codes
- Frances Ahmad, N.P., PHDBurlingame, CA 940101205122371
- Kimberly Dow, PMHNP-BCBurlingame, CA 940101316486541
- Elizabeth Hinchman, RN, NP, PMHNPBurlingame, CA 940101669690517
- Alexandra Monrroy, PMHNP-BCBurlingame, CA 940101821740010
- Ogochukwu OffiaeliBurlingame, CA 940101992580492
- Joanne Probert, NPBurlingame, CA 940101821713975
- Jhunrie Flores, PMHNP-BCDaly City, CA 940151811883408
- Kathryn HaDaly City, CA 940151467284620
Common questions
What is Mary Ellen Knopf, PMHNP's NPI number?
Mary Ellen Knopf, PMHNP's National Provider Identifier (NPI) is 1316184187, issued on Jan 15, 2009. An NPI identifies a provider in billing; it is not a license.
Where is Mary Ellen Knopf, PMHNP located?
The NPPES record lists a practice address at 1012 Villa Ave, Belmont, CA, 94002. Phone: (650) 654-9727. Providers update this record themselves, so call before visiting.
How can I verify Mary Ellen Knopf, PMHNP's license?
NPPES lists California license number 18552, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
How much does Mary Ellen Knopf, PMHNP prescribe under Medicare Part D?
In 2024, Mary Ellen Knopf, PMHNP had 124 Medicare Part D claims for 20 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.