2026 NPPES data Cardiovascular Disease Physician NPI 1063550234 M.D.
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CHARLES OKONKWO, M.D.

Cardiovascular Disease Physician in LOS ANGELES, 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
5K
Medicare Part D claims · 97 beneficiaries · Cardiovascular Disease Physician avg: 3K

What the federal data shows

CHARLES OKONKWO, M.D. filed 5,071 Medicare Part D claims in 2023 as a Cardiovascular Disease Physician in LOS ANGELES, California.

5K
Part D claims, 2023

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.

CHARLES OKONKWO, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

5,071 Top 6% higher than 94% 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-eligible specialty (heuristic — not verified)

CHARLES OKONKWO, M.D. practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about CHARLES OKONKWO, M.D.?

Quality data not reported

NPI registry status

Active

Issued 02/01/2007

NPI 1063550234

Primary specialty

Cardiovascular Disease Physician

Mid-sized

24,795 US NPIs in this specialty

Medicare Part D claims

5,071 67% vs specialty avg

2023 prescription claims

Specialty avg: 3,033

Specialty distribution in California

How Cardiovascular Disease Physician compares to other specialties among California providers

California providers

Cardiovascular Disease Physician share within California

1. Cardiovascular Disease Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Cardiovascular Disease Physician share within California

Specialty board-certification context

Estimated specialty board-certified rate — Cardiovascular Disease Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Cardiovascular Disease Physician ABMS/AOA estimate

Est. board-certified rate (Cardiovascular Disease Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Cardiovascular Disease 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).

CHARLES OKONKWO, M.D. appears in the CMS NPPES registry as a Cardiovascular Disease Physician provider holding M.D. credentials at 231 W VERNON AVE, LOS ANGELES, CA, 90037, with a listed phone of (323) 234-7200. NPI 1063550234 was issued on 02/01/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what OKONKWO 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 5,071 prescription claims written by this provider, covering 97 Medicare beneficiaries and totaling roughly $540K in drug spend, with an opioid prescribing rate of 11.2%. 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.

Cardiovascular Disease Physician is a mid-sized specialty nationwide, with 24,795 enrolled providers across 54 states and an average of 3,033 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

231 W VERNON AVE
LOS ANGELES, CA 90037

Provider Details

NPI 1063550234
Specialty Cardiovascular Disease Physician
Credentials M.D.
Gender Male
NPI Issued 02/01/2007

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 CHARLES OKONKWO, M.D.. To verify CHARLES OKONKWO, 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.

5,071
Total Claims
$540K
Total Drug Cost
97
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
5,587
Total Day Supply
155,070
Generic Drug Cost
$88K
Opioid Claims
570 (11.2% rate)
Antibiotic Claims
73

Patient Demographics

Average Patient Age
75.1 years
Avg HCC Risk Score
1.98
Gender Split
60% female / 40% male

Top Prescribed Drugs (Medicare Part D)

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

What CHARLES OKONKWO, 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
Acetaminophen-Codeine
Acetaminophen With Codeine
286
Tramadol Hcl
259
Amlodipine Besylate-Benazepril
Amlodipine Besylate/Benazepril
226
Rosuvastatin Calcium
220
Spironolactone
174
Atorvastatin Calcium
163
Amlodipine Besylate
160
Carvedilol
137
Farxiga
Dapagliflozin Propanediol
114
Diclofenac Sodium
107

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

Cardiovascular Disease Physician Overview

How CHARLES OKONKWO, M.D. fits within the Cardiovascular Disease Physician landscape nationally.

24,795
Cardiovascular Disease Physician Providers in US
54
States with Cardiovascular Disease Physician
3,033
Avg Claims per Provider

CHARLES OKONKWO, M.D.'s 5,071 claims are above the specialty average of 3,033.

Nearby Cardiovascular Disease Physician Providers in California

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

Compare Cardiovascular Disease Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is CHARLES OKONKWO, M.D.'s specialty?
CHARLES OKONKWO, M.D. specializes in Cardiovascular Disease Physician and practices in LOS ANGELES, California. Credentials: M.D..
How much does CHARLES OKONKWO, M.D. prescribe under Medicare Part D?
In 2023, CHARLES OKONKWO, M.D. wrote 5,071 Medicare Part D claims totaling $540K in drug costs for 97 beneficiaries.
Where is CHARLES OKONKWO, M.D. located?
CHARLES OKONKWO, M.D. is located at 231 W VERNON AVE, LOS ANGELES, CA, 90037. Phone: (323) 234-7200.
What is CHARLES OKONKWO, M.D.'s NPI number?
CHARLES OKONKWO, M.D.'s National Provider Identifier (NPI) is 1063550234, issued on 02/01/2007.
Does CHARLES OKONKWO, M.D. prescribe opioids?
Yes, CHARLES OKONKWO, M.D. had 570 opioid claims in 2023 with an opioid prescribing rate of 11.2%.
How many Cardiovascular Disease Physician providers are there in the US?
There are 24,795 Cardiovascular Disease Physician providers across 54 states in the US. The average Cardiovascular Disease Physician provider writes 3,033 Medicare Part D claims per year.
What drugs does CHARLES OKONKWO, M.D. prescribe most often?
Based on 2023 Medicare Part D data, CHARLES OKONKWO, M.D.'s most frequently prescribed drugs include Acetaminophen-Codeine, Tramadol Hcl, Amlodipine Besylate-Benazepril. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does CHARLES OKONKWO, M.D. accept Medicare?
CHARLES OKONKWO, M.D. appears in CMS Medicare data with 5,071 Part D claims and 97 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify CHARLES OKONKWO, M.D.'s credentials?
CHARLES OKONKWO, M.D.'s NPI is 1063550234 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