2026 NPPES data Developmental - Behavioral Pediatrics Physician NPI 1659356020 M.D.
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RANDI HAGERMAN, M.D.

Developmental - Behavioral Pediatrics Physician in DAVIS, 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
248
Medicare Part D claims · 16 beneficiaries · Developmental - Behavioral Pediatrics Physician avg: 175
What the federal data reveals: RANDI HAGERMAN, M.D. is a Developmental - Behavioral Pediatrics Physician ([object Object]) practicing in DAVIS, California with a Medicare Part D prescribing footprint of 248 claims across 16 beneficiaries .

What stands out: RANDI HAGERMAN, M.D. filed 248 Medicare Part D claims in 2023 across DAVIS, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

RANDI HAGERMAN, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

RANDI HAGERMAN, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 12/08/2005

NPI 1659356020

Primary specialty

Developmental - Behavioral Pediatrics Physician

Niche

946 US NPIs in this specialty

Medicare Part D claims

248 42% vs specialty avg

2023 prescription claims

Specialty avg: 175

Specialty distribution in California

How Developmental - Behavioral Pediatrics Physician compares to other specialties among California providers

California providers

Developmental - Behavioral Pediatrics Physician share within California

1. Developmental - Behavioral Pediatrics Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Developmental - Behavioral Pediatrics Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Developmental - Behavioral Pediatrics Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Developmental - Behavioral Pediatrics Physician ABMS/AOA estimate

Est. board-certified rate (Developmental - Behavioral Pediatrics Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Developmental - Behavioral Pediatrics Physician) — 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).

RANDI HAGERMAN, M.D. is a Developmental - Behavioral Pediatrics Physician provider practicing in DAVIS, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1659356020. 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.

RANDI HAGERMAN, M.D. appears in the CMS NPPES registry as a Developmental - Behavioral Pediatrics Physician provider holding M.D. credentials at 4307 REDBUD PL, DAVIS, CA, 95616, with a listed phone of (530) 750-2141. NPI 1659356020 was issued on 12/08/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what HAGERMAN 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 248 prescription claims written by this provider, covering 16 Medicare beneficiaries and totaling roughly $19K in drug spend. 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.

Developmental - Behavioral Pediatrics Physician is a narrow specialty nationwide, with 946 enrolled providers across 52 states and an average of 175 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

4307 REDBUD PL
DAVIS, CA 95616

Provider Details

NPI 1659356020
Specialty Developmental - Behavioral Pediatrics Physician
Credentials M.D.
Gender Female
NPI Issued 12/08/2005

Hospital and facility affiliations

Facilities where RANDI HAGERMAN, M.D. bills Medicare from. Star ratings (1-5) are CMS Hospital Compare's "Hospital overall rating" — a composite of mortality, readmission, patient experience, safety, timely care, and efficient use of medical imaging measures. Source: CMS Care Compare.

REGENTS OF THE UNIV OF CA
SACRAMENTO, CA

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

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 RANDI HAGERMAN, M.D.. To verify RANDI HAGERMAN, M.D.'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.

Medicare Part D Prescribing Data

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

248
Total Claims
$19K
Total Drug Cost
16
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
312
Total Day Supply
9,023
Brand Drug Cost
$0
Generic Drug Cost
$19K
Antibiotic Claims
24

Patient Demographics

Average Patient Age
44.4 years
Avg HCC Risk Score
0.47

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Metformin Hcl Er
Metformin Hcl
39
Metformin Hcl
32
Aripiprazole
28
Benztropine Mesylate
25
Minocycline Hcl
24
Clonidine Hcl
14
Risperidone
14
Carbamazepine
13
Lamotrigine
13
Loperamide
Loperamide Hcl
12

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

Developmental - Behavioral Pediatrics Physician Overview

How RANDI HAGERMAN, M.D. fits within the Developmental - Behavioral Pediatrics Physician landscape nationally.

946
Developmental - Behavioral Pediatrics Physician Providers in US
52
States with Developmental - Behavioral Pediatrics Physician
175
Avg Claims per Provider

RANDI HAGERMAN, M.D.'s 248 claims are above the specialty average of 175.

Nearby Developmental - Behavioral Pediatrics Physician Providers in California

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

Compare Developmental - Behavioral Pediatrics Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is RANDI HAGERMAN, M.D.'s specialty?
RANDI HAGERMAN, M.D. specializes in Developmental - Behavioral Pediatrics Physician and practices in DAVIS, California. Credentials: M.D..
How much does RANDI HAGERMAN, M.D. prescribe under Medicare Part D?
In 2023, RANDI HAGERMAN, M.D. wrote 248 Medicare Part D claims totaling $19K in drug costs for 16 beneficiaries.
Where is RANDI HAGERMAN, M.D. located?
RANDI HAGERMAN, M.D. is located at 4307 REDBUD PL, DAVIS, CA, 95616. Phone: (530) 750-2141.
What is RANDI HAGERMAN, M.D.'s NPI number?
RANDI HAGERMAN, M.D.'s National Provider Identifier (NPI) is 1659356020, issued on 12/08/2005.
How many Developmental - Behavioral Pediatrics Physician providers are there in the US?
There are 946 Developmental - Behavioral Pediatrics Physician providers across 52 states in the US. The average Developmental - Behavioral Pediatrics Physician provider writes 175 Medicare Part D claims per year.
What drugs does RANDI HAGERMAN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, RANDI HAGERMAN, M.D.'s most frequently prescribed drugs include Metformin Hcl Er, Metformin Hcl, Aripiprazole. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does RANDI HAGERMAN, M.D. accept Medicare?
RANDI HAGERMAN, M.D. appears in CMS Medicare data with 248 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 RANDI HAGERMAN, M.D.'s credentials?
RANDI HAGERMAN, M.D.'s NPI is 1659356020 with credentials M.D.. 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