2026 NPPES data Psychiatric/Mental Health Nurse Practitioner NPI 1689026692 REGISTERED NURSE
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GRETCHEN ADAMS, REGISTERED NURSE

Psychiatric/Mental Health Nurse Practitioner in POMONA, California. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.

Federal data — no proprietary rating. PlainDoctor publishes the actual CMS NPPES and Medicare records — NPI registration, specialty, practice location, and prescribing data — without a composite score or editorial opinion on top. Every field traces to a federal source.
Prescribing volume
242
Medicare Part D claims · 16 beneficiaries · Psychiatric/Mental Health Nurse Practitioner avg: 927
Generic prescribing
93%
generic claims · 7% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$1.3K
38 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: GRETCHEN ADAMS, REGISTERED NURSE is a Psychiatric/Mental Health Nurse Practitioner ([object Object]) practicing in POMONA, California with a Medicare Part D prescribing footprint of 242 claims across 16 beneficiaries — 7% brand-name prescribing . Industry payments of $1.3K across 38 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: GRETCHEN ADAMS, REGISTERED NURSE filed 242 Medicare Part D claims in 2023 across POMONA, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

GRETCHEN ADAMS, REGISTERED NURSE at a glance

Quality data not reported

NPI registry status

Active

Issued 07/01/2016

NPI 1689026692

Primary specialty

Psychiatric/Mental Health Nurse Practitioner

Mid-sized

39,953 US NPIs in this specialty

Medicare Part D claims

242 74% vs specialty avg

2023 prescription claims

Specialty avg: 927

Specialty distribution in California

How Psychiatric/Mental Health Nurse Practitioner compares to other specialties among California providers

California providers

Psychiatric/Mental Health Nurse Practitioner share within California

1. Psychiatric/Mental Health Nurse Practitioner42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Psychiatric/Mental Health Nurse Practitioner share within California

Specialty board-certification context

Estimated specialty board-certified rate — Psychiatric/Mental Health Nurse Practitioner (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Psychiatric/Mental Health Nurse Practitioner ABMS/AOA estimate

Est. board-certified rate (Psychiatric/Mental Health Nurse Practitioner) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Psychiatric/Mental Health Nurse Practitioner) — ABMS / AOA estimate

The Merit-based Incentive Payment System (MIPS) scores providers 0–100 across four performance categories: Quality, Cost, Promoting Interoperability, and Improvement Activities, weighted under 42 CFR §414.1380. Reporting is voluntary for many small practices, so absence of a MIPS score is not a quality signal.

Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus continuous Maintenance of Certification cycles. Verify any individual provider's status through certificationmatters.org (ABMS) or osteopathic.org (AOA).

GRETCHEN ADAMS, REGISTERED NURSE is a Psychiatric/Mental Health Nurse Practitioner provider practicing in POMONA, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: REGISTERED NURSE. NPI: 1689026692. This profile includes practice location, specialty classification, and organizational affiliations from the CMS provider registry. Provider information is self-reported to CMS and updated monthly.

GRETCHEN ADAMS, REGISTERED NURSE appears in the CMS NPPES registry as a Psychiatric/Mental Health Nurse Practitioner provider holding REGISTERED NURSE credentials at 831 E ARROW HWY, POMONA, CA, 91767, with a listed phone of (909) 398-4383. NPI 1689026692 was issued on 07/01/2016. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ADAMS most recently submitted to CMS rather than a vetted directory listing, which is why patients should always confirm the practice is still at this location before scheduling.

Medicare Part D records for calendar year 2023 show 242 prescription claims written by this provider, covering 16 Medicare beneficiaries and totaling roughly $33K in drug spend, split 7% brand-name and 93% generic by claim count. These figures capture only Medicare Part D — commercial insurance, Medicaid, and cash-pay prescriptions are not included, and any drug-beneficiary cell under 11 is suppressed by CMS for patient privacy.

Psychiatric/Mental Health Nurse Practitioner is a mid-sized specialty nationwide, with 39,953 enrolled providers across 54 states and an average of 927 Part D claims per prescriber, so the context for interpreting these metrics differs meaningfully from a primary-care baseline. Important: PlainDoctor is a directory of publicly available government data, not medical advice, a malpractice database, or a quality rating. Inclusion here does not imply a recommendation, and absence of complaints or sanctions on this page does not mean none exist — always verify credentials through the NPPES NPI Registry, your state medical board, and the ABMS or AOA before making healthcare decisions.

Practice Address

831 E ARROW HWY
POMONA, CA 91767

Provider Details

NPI 1689026692
Specialty Psychiatric/Mental Health Nurse Practitioner
Credentials REGISTERED NURSE
Gender Female
NPI Issued 07/01/2016

Industry payments received (2024) — CMS Open Payments transparency data

The federal Physician Payments Sunshine Act (part of the Affordable Care Act) requires drug and medical-device manufacturers + group purchasing organizations to publicly report payments and other transfers of value to physicians and teaching hospitals. The data below covers 2024 for GRETCHEN ADAMS, REGISTERED NURSE. Source: openpaymentsdata.cms.gov.

Total received

$1.3K

Largest payer

Alkermes, Inc.

Most common payment type

Food and Beverage

Industry payments are not necessarily indicators of bias — they include research funding, consulting fees for evidence-based work, royalties for inventions, food at conferences, and similar items. The disclosure exists for transparency. Read our methodology for how we interpret this data.

License & disciplinary context — California MBC 2023 annual report

Aggregate state board data only — NOT a determination of any individual provider's status. The figures below describe statewide disciplinary activity across all ~150K California medical licensees in 2023 — they are NOT specific to GRETCHEN ADAMS, REGISTERED NURSE. To verify GRETCHEN ADAMS, REGISTERED NURSE's current license status, search the MBC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

576
Total board actions, California 2023
Across 556 cases
3.84
Actions per 1,000 licensees
California statewide rate
probation
Most common action type
186 cases

MBC publishes annual disciplinary statistics as part of public-record reporting under each state's Administrative Procedure Act. See the full breakdown by action type and year on the California disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Generic-heavy

GRETCHEN ADAMS, REGISTERED NURSE — brand share 7.0%
Specialty average (est.)

7% brand-name claims vs 93% generic, on 242 2023 Medicare Part D claims.

The federal Medicare Part D Generic Dispensing Rate national benchmark sits near 90% generic / 10% brand for primary-care prescribers, per CMS Office of the Actuary 2024 estimates. Higher brand share is common in specialty prescribing where generic equivalents are not available.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

242
Total Claims
$33K
Total Drug Cost
16
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
250
Total Day Supply
7,431
Brand vs Generic
7% brand / 93% generic
Brand Drug Cost
$26K
Generic Drug Cost
$7K

Patient Demographics

Average Patient Age
47.9 years
Avg HCC Risk Score
1.73

Top Prescribed Drugs (Medicare Part D)

Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.

Drug Claims
Trazodone Hcl
27
Sertraline Hcl
20
Topiramate
18
Amitriptyline Hcl
16
Gabapentin
16
Escitalopram Oxalate
15
Fluoxetine Hcl
15
Aripiprazole
13

* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.

Psychiatric/Mental Health Nurse Practitioner Overview

How GRETCHEN ADAMS, REGISTERED NURSE fits within the Psychiatric/Mental Health Nurse Practitioner landscape nationally.

39,953
Psychiatric/Mental Health Nurse Practitioner Providers in US
54
States with Psychiatric/Mental Health Nurse Practitioner
927
Avg Claims per Provider

GRETCHEN ADAMS, REGISTERED NURSE's 242 claims are below the specialty average of 927.

Nearby Psychiatric/Mental Health Nurse Practitioner Providers in California

Other clinicians with the same primary specialty enrolled in California, drawn from the same CMS NPPES roster as ADAMS.

Compare Psychiatric/Mental Health Nurse Practitioner nationally: see state-by-state distribution →

Frequently Asked Questions

What is GRETCHEN ADAMS, REGISTERED NURSE's specialty?
GRETCHEN ADAMS, REGISTERED NURSE specializes in Psychiatric/Mental Health Nurse Practitioner and practices in POMONA, California. Credentials: REGISTERED NURSE.
How much does GRETCHEN ADAMS, REGISTERED NURSE prescribe under Medicare Part D?
In 2023, GRETCHEN ADAMS, REGISTERED NURSE wrote 242 Medicare Part D claims totaling $33K in drug costs for 16 beneficiaries.
Where is GRETCHEN ADAMS, REGISTERED NURSE located?
GRETCHEN ADAMS, REGISTERED NURSE is located at 831 E ARROW HWY, POMONA, CA, 91767. Phone: (909) 398-4383.
What is GRETCHEN ADAMS, REGISTERED NURSE's NPI number?
GRETCHEN ADAMS, REGISTERED NURSE's National Provider Identifier (NPI) is 1689026692, issued on 07/01/2016.
Does GRETCHEN ADAMS, REGISTERED NURSE prescribe more brand-name or generic drugs?
GRETCHEN ADAMS, REGISTERED NURSE's prescribing is 7% brand-name and 93% generic drugs by claim count, with $26K in brand drug costs.
How many Psychiatric/Mental Health Nurse Practitioner providers are there in the US?
There are 39,953 Psychiatric/Mental Health Nurse Practitioner providers across 54 states in the US. The average Psychiatric/Mental Health Nurse Practitioner provider writes 927 Medicare Part D claims per year.
What drugs does GRETCHEN ADAMS, REGISTERED NURSE prescribe most often?
Based on 2023 Medicare Part D data, GRETCHEN ADAMS, REGISTERED NURSE's most frequently prescribed drugs include Trazodone Hcl, Sertraline Hcl, Topiramate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does GRETCHEN ADAMS, REGISTERED NURSE accept Medicare?
GRETCHEN ADAMS, REGISTERED NURSE appears in CMS Medicare data with 242 Part D claims and 16 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify GRETCHEN ADAMS, REGISTERED NURSE's credentials?
GRETCHEN ADAMS, REGISTERED NURSE's NPI is 1689026692 with credentials REGISTERED NURSE. You can verify this through the NPPES NPI Registry, check state medical board records, and confirm board certification through the ABMS or AOA.

Data Sources

Provider Directory
CMS National Plan and Provider Enumeration System (NPPES), download.cms.gov/nppes, updated monthly. Contains NPI, specialty, credentials, and practice location.
Specialty Classification
NUCC Health Care Provider Taxonomy (nucc.org), the industry standard for classifying provider specialties in Medicare and Medicaid billing.
Prescribing Data
CMS Medicare Part D Prescriber Public Use File (2023). Includes claims, drug costs, beneficiaries, and opioid prescribing rates.
Limitations
Provider data is self-reported to CMS. Prescribing data reflects Medicare Part D only and does not include commercial insurance, Medicaid, or cash prescriptions. Claims below 11 beneficiaries are suppressed by CMS for privacy.

See our complete data methodology for details on how we collect and process government data.

Data as of April 2026 (NPPES) / 2023 (Medicare Part D). Source: Centers for Medicare & Medicaid Services (CMS).

Disclaimer: Data from CMS NPPES and Medicare Part D. PlainDoctor does not rate or rank providers. Provider information is self-reported and may not be current. Always verify information directly with the provider. About · Methodology