2026 NPPES data Pain Medicine (Physical Medicine & Rehabilitation) Physician NPI 1710321864 M.D.
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ERNEST OH, M.D.

Pain Medicine (Physical Medicine & Rehabilitation) Physician in RIVERSIDE, 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
7K
Medicare Part D claims · 826 beneficiaries · Pain Medicine (Physical Medicine & Rehabilitation) Physician avg: 1K
Generic prescribing
99%
generic claims · 1% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$594.6
30 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

ERNEST OH, M.D. filed 6,683 Medicare Part D claims in 2023 as a Pain Medicine (Physical Medicine & Rehabilitation) Physician in RIVERSIDE, California, prescribing 99% generic.

7K
Part D claims, 2023
99%
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.

ERNEST OH, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

6,683 Top 4% higher than 96% 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%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). Below this entry. 1,800–2,000: 16,451 prescribers (1%). Below this entry. 2,000–2,200: 213,991 prescribers (16%). This entry sits in this band. 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)

ERNEST OH, 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).

What does the federal data show about ERNEST OH, M.D.?

Quality data not reported

NPI registry status

Active

Issued 04/19/2013

NPI 1710321864

Primary specialty

Pain Medicine (Physical Medicine & Rehabilitation) Physician

Niche

1,626 US NPIs in this specialty

Medicare Part D claims

6,683 377% vs specialty avg

2023 prescription claims

Specialty avg: 1,401

Specialty distribution in California

How Pain Medicine (Physical Medicine & Rehabilitation) Physician compares to other specialties among California providers

California providers

Pain Medicine (Physical Medicine & Rehabilitation) Physician share within California

1. Pain Medicine (Physical Medicine & Rehabilitation) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Pain Medicine (Physical Medicine & Rehabilitation) Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Pain Medicine (Physical Medicine & Rehabilitation) Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Pain Medicine (Physical Medicine & Rehabilitation) Physician ABMS/AOA estimate

Est. board-certified rate (Pain Medicine (Physical Medicine & Rehabilitation) Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Pain Medicine (Physical Medicine & Rehabilitation) 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).

ERNEST OH, M.D. appears in the CMS NPPES registry as a Pain Medicine (Physical Medicine & Rehabilitation) Physician provider holding M.D. credentials at 7117 BROCKTON AVE, RIVERSIDE, CA, 92506, with a listed phone of (951) 782-3765. NPI 1710321864 was issued on 04/19/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what OH 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 6,683 prescription claims written by this provider, covering 826 Medicare beneficiaries and totaling roughly $294K in drug spend, split 1% brand-name and 99% generic by claim count, with an opioid prescribing rate of 48.8%. 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.

Pain Medicine (Physical Medicine & Rehabilitation) Physician is a narrow specialty nationwide, with 1,626 enrolled providers across 50 states and an average of 1,401 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

7117 BROCKTON AVE
RIVERSIDE, CA 92506

Provider Details

NPI 1710321864
Specialty Pain Medicine (Physical Medicine & Rehabilitation) Physician
Credentials M.D.
Gender Male
NPI Issued 04/19/2013

Hospital and facility affiliations

Facilities where ERNEST OH, 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.

RIVERSIDE MEDICAL CLINIC INC
RIVERSIDE, 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 ERNEST OH, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$595

Largest payer

ABBVIE 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 ERNEST OH, M.D.. To verify ERNEST OH, 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.

Brand vs generic prescribing mix · Generic-heavy

ERNEST OH, M.D. — brand share 1.0%
Specialty average (est.)

1% brand-name claims vs 99% generic, on 6,683 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.

6,683
Total Claims
$294K
Total Drug Cost
826
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
8,178
Total Day Supply
235,580
Brand vs Generic
1% brand / 99% generic
Brand Drug Cost
$47K
Generic Drug Cost
$247K
Opioid Claims
3,263 (48.8% rate)
Antibiotic Claims
12

Patient Demographics

Average Patient Age
72.3 years
Avg HCC Risk Score
1.85
Gender Split
66% female / 34% male
Age Distribution
<65: 113, 65-74: 397, 75-84: 243, 85+: 73

Top Prescribed Drugs (Medicare Part D)

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

What ERNEST OH, M.D. 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
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
1,594
Gabapentin
659
Pregabalin
498
Duloxetine Hcl
493
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
438
Tramadol Hcl
363
Baclofen
247
Oxycodone Hcl
170
Ibuprofen
166
Morphine Sulfate Er
Morphine Sulfate
161

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

Pain Medicine (Physical Medicine & Rehabilitation) Physician Overview

How ERNEST OH, M.D. fits within the Pain Medicine (Physical Medicine & Rehabilitation) Physician landscape nationally.

1,626
Pain Medicine (Physical Medicine & Rehabilitation) Physician Providers in US
50
States with Pain Medicine (Physical Medicine & Rehabilitation) Physician
1,401
Avg Claims per Provider

ERNEST OH, M.D.'s 6,683 claims are above the specialty average of 1,401.

Nearby Pain Medicine (Physical Medicine & Rehabilitation) Physician Providers in California

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

Compare Pain Medicine (Physical Medicine & Rehabilitation) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is ERNEST OH, M.D.'s specialty?
ERNEST OH, M.D. specializes in Pain Medicine (Physical Medicine & Rehabilitation) Physician and practices in RIVERSIDE, California. Credentials: M.D..
How much does ERNEST OH, M.D. prescribe under Medicare Part D?
In 2023, ERNEST OH, M.D. wrote 6,683 Medicare Part D claims totaling $294K in drug costs for 826 beneficiaries.
Where is ERNEST OH, M.D. located?
ERNEST OH, M.D. is located at 7117 BROCKTON AVE, RIVERSIDE, CA, 92506. Phone: (951) 782-3765.
What is ERNEST OH, M.D.'s NPI number?
ERNEST OH, M.D.'s National Provider Identifier (NPI) is 1710321864, issued on 04/19/2013.
Does ERNEST OH, M.D. prescribe more brand-name or generic drugs?
ERNEST OH, M.D.'s prescribing is 1% brand-name and 99% generic drugs by claim count, with $47K in brand drug costs.
Does ERNEST OH, M.D. prescribe opioids?
Yes, ERNEST OH, M.D. had 3,263 opioid claims in 2023 with an opioid prescribing rate of 48.8%.
How many Pain Medicine (Physical Medicine & Rehabilitation) Physician providers are there in the US?
There are 1,626 Pain Medicine (Physical Medicine & Rehabilitation) Physician providers across 50 states in the US. The average Pain Medicine (Physical Medicine & Rehabilitation) Physician provider writes 1,401 Medicare Part D claims per year.
What drugs does ERNEST OH, M.D. prescribe most often?
Based on 2023 Medicare Part D data, ERNEST OH, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Gabapentin, Pregabalin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does ERNEST OH, M.D. accept Medicare?
ERNEST OH, M.D. appears in CMS Medicare data with 6,683 Part D claims and 826 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify ERNEST OH, M.D.'s credentials?
ERNEST OH, M.D.'s NPI is 1710321864 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