SOLOMON OKAI, M.D.
Internal Medicine Physician in OAK PARK, Illinois. CMS National Plan and Provider Enumeration System profile including specialty classification, practice address, and Medicare prescribing data when reported.
What the federal data shows
SOLOMON OKAI, M.D. filed 2,506 Medicare Part D claims in 2023 as a Internal Medicine Physician in OAK PARK, Illinois, prescribing 88% generic.
- 3K
- Part D claims, 2023
- 88%
- generic prescribing
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.
SOLOMON OKAI, M.D.'s Medicare Part D volume vs every U.S. prescriber
Total Medicare Part D claims, 2023 — across all CMS prescribers nationally
2,506 Top 13% higher than 87% of 1,370,886 prescribers
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
SOLOMON OKAI, 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 SOLOMON OKAI, M.D.?
Quality data not reportedPrimary specialty
Medicare Part D claims
Specialty distribution in Illinois
How Internal Medicine Physician compares to other specialties among Illinois providers
Internal Medicine Physician share within Illinois
Internal Medicine Physician is one of the more visible NUCC categories in Illinois
Each bar reflects the share of in-state providers whose primary NUCC taxonomy matches the specialty. Long tail of ~690 NUCC codes folded into "Other" to keep the comparison legible.
Specialty board-certification context
Estimated specialty board-certified rate — Internal Medicine Physician (ABMS / AOA reference)
- Est. board-certified rate
- 78%
- Internal Medicine Physician ABMS/AOA estimate
Est. board-certified rate (Internal Medicine Physician) — ABMS / AOA estimate
Verify credentials
- Verify via ABMS free public lookup
- Verify via AOA osteopathic boards
- Specialty volume Internal Medicine Physician US NPIs
Specialty board-certified rate — Internal Medicine Physician estimate
Board certification through an ABMS or AOA member board signals voluntary post-licensure examination plus Maintenance of Certification cycles. CMS does not publish a per-provider board-certification field; the figure shown is the specialty-level estimated rate from ABMS / AOA reference data.
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).
SOLOMON OKAI, M.D. appears in the CMS NPPES registry as a Internal Medicine Physician provider holding M.D. credentials at 6429 NORTH AVE, OAK PARK, IL, 60302, with a listed phone of (708) 763-8334. NPI 1992815088 was issued on 08/30/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what OKAI 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 2,506 prescription claims written by this provider, covering 220 Medicare beneficiaries and totaling roughly $203K in drug spend, split 12% brand-name and 88% generic by claim count, with an opioid prescribing rate of 1.5%. 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.
Internal Medicine Physician is a high-volume specialty nationwide, with 172,858 enrolled providers across 56 states and an average of 2,716 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
Provider Details
| NPI | 1992815088 |
|---|---|
| Specialty | Internal Medicine Physician |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 08/30/2006 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm SOLOMON OKAI, M.D.'s current license status, disciplinary history, and board certifications with the Illinois Department of Financial and Professional Regulation in Illinois before relying on this page for a clinical or care decision.
How we sourced this profile
License & disciplinary context — Illinois IDFPR 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 ~42K Illinois medical licensees in 2023 — they are NOT specific to SOLOMON OKAI, M.D.. To verify SOLOMON OKAI, M.D.'s current license status, search the IDFPR public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.
IDFPR 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 Illinois disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.
Brand vs generic prescribing mix · Typical
12% brand-name claims vs 88% generic, on 2,506 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.
Prescribing Breakdown
- 30-Day Fills
- 4,571
- Total Day Supply
- 126,867
- Brand vs Generic
- 12% brand / 88% generic
- Brand Drug Cost
- $166K
- Generic Drug Cost
- $35K
- Opioid Claims
- 38 (1.5% rate)
- Antibiotic Claims
- 285
Patient Demographics
- Average Patient Age
- 65.8 years
- Avg HCC Risk Score
- 1.58
- Gender Split
- 49% female / 51% male
- Age Distribution
- <65: 72, 65-74: 113, 75-84: N/A, 85+: N/A
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What SOLOMON OKAI, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Amlodipine Besylate
Amlodipine Besylate
270 claims
- Atorvastatin Calcium
Atorvastatin Calcium
171 claims
- Losartan Potassium
Losartan Potassium
137 claims
- Albuterol Sulfate …
Albuterol Sulfate Hfa
126 claims
- Ciprofloxacin Hcl
Ciprofloxacin Hcl
114 claims
- Amoxicillin 86
Amoxicillin
86 claims
- Lisinopril 74
Lisinopril
74 claims
- Glipizide 68
Glipizide
68 claims
| Drug | Claims |
|---|---|
| Amlodipine Besylate | 270 |
| Atorvastatin Calcium | 171 |
| Losartan Potassium | 137 |
| Albuterol Sulfate Hfa Albuterol Sulfate | 126 |
| Ciprofloxacin Hcl | 114 |
| Amoxicillin | 86 |
| Lisinopril | 74 |
| Glipizide | 68 |
| Metformin Hcl | 63 |
| Hydralazine Hcl | 57 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Internal Medicine Physician Overview
How SOLOMON OKAI, M.D. fits within the Internal Medicine Physician landscape nationally.
SOLOMON OKAI, M.D.'s 2,506 claims are below the specialty average of 2,716.
Nearby Internal Medicine Physician Providers in Illinois
Other clinicians with the same primary specialty enrolled in Illinois, drawn from the same CMS NPPES roster as OKAI.
Compare Internal Medicine Physician nationally: see state-by-state distribution →
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Frequently Asked Questions
What is SOLOMON OKAI, M.D.'s specialty? ▼
How much does SOLOMON OKAI, M.D. prescribe under Medicare Part D? ▼
Where is SOLOMON OKAI, M.D. located? ▼
What is SOLOMON OKAI, M.D.'s NPI number? ▼
Does SOLOMON OKAI, M.D. prescribe more brand-name or generic drugs? ▼
Does SOLOMON OKAI, M.D. prescribe opioids? ▼
How many Internal Medicine Physician providers are there in the US? ▼
What drugs does SOLOMON OKAI, M.D. prescribe most often? ▼
Does SOLOMON OKAI, M.D. accept Medicare? ▼
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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