2026 NPPES data Clinical Neurophysiology Physician NPI 1962509067 D.O.
Verify on CMS →

Richard Riemer, D.O.

Clinical Neurophysiology Physician in Stockton, California. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 639 in Clinical Neurophysiology Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
645
Medicare Part D claims · 90 beneficiaries · Clinical Neurophysiology Physician avg: 2K
Generic prescribing
95%
generic claims · 5% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$234.47
11 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Richard Riemer, D.O. filed 645 Medicare Part D claims in 2023 as a Clinical Neurophysiology Physician in Stockton, California, prescribing 95% generic.

645
Part D claims, 2023
95%
generic prescribing
Likely
board-certified (heuristic)

Every figure on this page comes straight from federal CMS records (NPPES, Medicare Part D, MIPS, Open Payments) - no proprietary rating or editorial opinion is applied.

Richard Riemer, D.O.'s Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023, across all CMS prescribers nationally

645 Top 31% higher than 69% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). This entry sits in this band. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2K+: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source CMS Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic, not verified)

Richard Riemer, D.O. 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).

What does the federal data show about Richard Riemer, D.O.?

Quality data not reported

NPI registry status

Active

Issued 09/20/2006

NPI 1962509067

Primary specialty

Clinical Neurophysiology Physician

Niche

639 US NPIs in this specialty

Medicare Part D claims

645 58% vs specialty avg

2023 prescription claims

Specialty avg: 1,523

Specialty distribution in California

How Clinical Neurophysiology Physician compares to other specialties among California providers

California providers
Behavior Technician - 17.3%Behavior Technician17.3%Marriage & Family Therapist - 5.5%Marriage & Family Therapist5.5%Student in an Organized Health Care Education/Training Program - 5%Student in an Organized Health Care Education/Training Program5%Mental Health Counselor - 3.9%Mental Health Counselor3.9%Pharmacist - 3.5%Pharmacist3.5%Clinical Social Worker - 3.1%Clinical Social Worker3.1%Clinical Neurophysiology Physician - 0%Clinical Neurophysiology Physician0%
Largest specialties in California (% of in-state providers)

Board certification

Not published by CMS

CMS does not publish a per-provider board-certification field in NPPES. PlainDoctor does not have a reliable per-specialty certification rate to show for Clinical Neurophysiology Physician. Verify directly:

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).

Richard Riemer, D.O. appears in the CMS NPPES registry as a Clinical Neurophysiology Physician provider holding D.O. credentials at 1805 N CALIFORNIA ST STE 201, Stockton, CA, 95204, with a listed phone of (209) 645-4005. NPI 1962509067 was issued on 09/20/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Riemer 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 645 prescription claims written by this provider, covering 90 Medicare beneficiaries and totaling roughly $158K in drug spend, split 5% brand-name and 95% generic by claim count, with an opioid prescribing rate of 2.0%. 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.

Clinical Neurophysiology Physician is a narrow specialty nationwide, with 639 enrolled providers across 50 states and an average of 1,523 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

1805 N CALIFORNIA ST STE 201
Stockton, CA 95204

Provider Details

NPI 1962509067
Specialty Clinical Neurophysiology Physician
Credentials D.O.
Gender Male
NPI Issued 09/20/2006

Hospital and facility affiliations

Facilities where Richard Riemer, D.O. 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.

Touro University Medical Group
Stockton, 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).

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 Richard Riemer, D.O.. Source: openpaymentsdata.cms.gov.

Total received

$234

Largest payer

UCB, 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 Richard Riemer, D.O.. To verify Richard Riemer, D.O.'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

Richard Riemer, D.O. - brand share 5.0%
Clinical Neurophysiology Physician average

5% brand-name claims vs 95% generic, on 645 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.

645
Total Claims
$158K
Total Drug Cost
90
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,061
Total Day Supply
31,415
Brand vs Generic
5% brand / 95% generic
Brand Drug Cost
$83K
Generic Drug Cost
$75K
Opioid Claims
13 (2.0% rate)

Patient Demographics

Average Patient Age
70.8 years
Avg HCC Risk Score
1.93
Gender Split
47% female / 53% male
Age Distribution
<65: 20, 65-74: 32, 75-84: 25, 85+: 13

Top Prescribed Drugs (Medicare Part D)

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

What Richard Riemer, D.O. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Carbidopa-Levodopa
Carbidopa/Levodopa
90
Donepezil Hcl
60
Gabapentin
53
Levetiracetam
37
Clonazepam
25
Primidone
23
Amantadine
Amantadine Hcl
18
Rivastigmine
16
Memantine Hcl
14
Lamotrigine
13

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

Clinical Neurophysiology Physician Overview

How Richard Riemer, D.O. fits within the Clinical Neurophysiology Physician landscape nationally.

639
Clinical Neurophysiology Physician Providers in US
50
States with Clinical Neurophysiology Physician
1,523
Avg Claims per Provider

Richard Riemer, D.O.'s 645 claims are below the specialty average of 1,523.

Nearby Clinical Neurophysiology Physician Providers in California

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

Compare Clinical Neurophysiology Physician nationally: see state-by-state distribution →

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the California medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Clinical Neurophysiology Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Richard Riemer, D.O.'s specialty?
Richard Riemer, D.O. specializes in Clinical Neurophysiology Physician and practices in Stockton, California. Credentials: D.O..
How much does Richard Riemer, D.O. prescribe under Medicare Part D?
In 2023, Richard Riemer, D.O. wrote 645 Medicare Part D claims totaling $158K in drug costs for 90 beneficiaries.
Where is Richard Riemer, D.O. located?
Richard Riemer, D.O. is located at 1805 N CALIFORNIA ST STE 201, Stockton, CA, 95204. Phone: (209) 645-4005.
What is Richard Riemer, D.O.'s NPI number?
Richard Riemer, D.O.'s National Provider Identifier (NPI) is 1962509067, issued on 09/20/2006.
Does Richard Riemer, D.O. prescribe more brand-name or generic drugs?
Richard Riemer, D.O.'s prescribing is 5% brand-name and 95% generic drugs by claim count, with $83K in brand drug costs.
Does Richard Riemer, D.O. prescribe opioids?
Yes, Richard Riemer, D.O. had 13 opioid claims in 2023 with an opioid prescribing rate of 2.0%.
How many Clinical Neurophysiology Physician providers are there in the US?
There are 639 Clinical Neurophysiology Physician providers across 50 states in the US. The average Clinical Neurophysiology Physician provider writes 1,523 Medicare Part D claims per year.
What drugs does Richard Riemer, D.O. prescribe most often?
Based on 2023 Medicare Part D data, Richard Riemer, D.O.'s most frequently prescribed drugs include Carbidopa-Levodopa, Donepezil Hcl, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Richard Riemer, D.O. accept Medicare?
Richard Riemer, D.O. appears in CMS Medicare data with 645 Part D claims and 90 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Richard Riemer, D.O.'s credentials?
Richard Riemer, D.O.'s NPI is 1962509067 with credentials D.O.. 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

Compiled from official public sources by the PlainDoctor editorial team.