2026 NPPES data Pediatrics Physician NPI 1598792657 MD
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JOSEPH AIYENOWO, MD

Pediatrics Physician in PULLMAN, Washington. 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
1K
Medicare Part D claims · 332 beneficiaries · Pediatrics Physician avg: 762
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: JOSEPH AIYENOWO, MD is a Pediatrics Physician ([object Object]) practicing in PULLMAN, Washington with a Medicare Part D prescribing footprint of 1K claims across 332 beneficiaries — 14% brand-name prescribing .

What stands out: JOSEPH AIYENOWO, MD filed 1,197 Medicare Part D claims in 2023 across PULLMAN, Washington. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board-eligible specialty (heuristic — not verified)

JOSEPH AIYENOWO, MD 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).

JOSEPH AIYENOWO, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 06/26/2006

NPI 1598792657

Primary specialty

Pediatrics Physician

High-volume

80,574 US NPIs in this specialty

Medicare Part D claims

1,197 57% vs specialty avg

2023 prescription claims

Specialty avg: 762

Specialty distribution in Washington

How Pediatrics Physician compares to other specialties among Washington providers

Washington providers

Pediatrics Physician share within Washington

1. Pediatrics Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Pediatrics Physician share within Washington

Specialty board-certification context

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

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

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

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

JOSEPH AIYENOWO, MD is a Pediatrics Physician provider practicing in PULLMAN, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1598792657. 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.

JOSEPH AIYENOWO, MD appears in the CMS NPPES registry as a Pediatrics Physician provider holding MD credentials at 825 SE BISHOP BLVD STE 200, PULLMAN, WA, 99163, with a listed phone of (509) 332-2517. NPI 1598792657 was issued on 06/26/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what AIYENOWO 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 1,197 prescription claims written by this provider, covering 332 Medicare beneficiaries and totaling roughly $143K in drug spend, split 14% brand-name and 86% generic by claim count, with an opioid prescribing rate of 1.9%. 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.

Pediatrics Physician is a high-volume specialty nationwide, with 80,574 enrolled providers across 56 states and an average of 762 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

825 SE BISHOP BLVD STE 200
PULLMAN, WA 99163

Provider Details

NPI 1598792657
Specialty Pediatrics Physician
Credentials MD
Gender Male
NPI Issued 06/26/2006

License & disciplinary context — Washington WMC 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 ~34K Washington medical licensees in 2023 — they are NOT specific to JOSEPH AIYENOWO, MD. To verify JOSEPH AIYENOWO, MD's current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases

WMC 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 Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

JOSEPH AIYENOWO, MD — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 1,197 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.

1,197
Total Claims
$143K
Total Drug Cost
332
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,265
Total Day Supply
63,797
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$124K
Generic Drug Cost
$20K
Opioid Claims
23 (1.9% rate)
Antibiotic Claims
52

Patient Demographics

Average Patient Age
70.8 years
Avg HCC Risk Score
1.24
Gender Split
52% female / 48% male
Age Distribution
<65: 54, 65-74: 167, 75-84: 89, 85+: 22

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Atorvastatin Calcium
58
Lisinopril
43
Fluticasone Propionate
41
Levothyroxine Sodium
37
Amlodipine Besylate
36
Gabapentin
35
Metformin Hcl
32
Losartan Potassium
30
Meloxicam
30
Prednisone
28

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

Pediatrics Physician Overview

How JOSEPH AIYENOWO, MD fits within the Pediatrics Physician landscape nationally.

80,574
Pediatrics Physician Providers in US
56
States with Pediatrics Physician
762
Avg Claims per Provider

JOSEPH AIYENOWO, MD's 1,197 claims are above the specialty average of 762.

Nearby Pediatrics Physician Providers in Washington

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

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

Frequently Asked Questions

What is JOSEPH AIYENOWO, MD's specialty?
JOSEPH AIYENOWO, MD specializes in Pediatrics Physician and practices in PULLMAN, Washington. Credentials: MD.
How much does JOSEPH AIYENOWO, MD prescribe under Medicare Part D?
In 2023, JOSEPH AIYENOWO, MD wrote 1,197 Medicare Part D claims totaling $143K in drug costs for 332 beneficiaries.
Where is JOSEPH AIYENOWO, MD located?
JOSEPH AIYENOWO, MD is located at 825 SE BISHOP BLVD STE 200, PULLMAN, WA, 99163. Phone: (509) 332-2517.
What is JOSEPH AIYENOWO, MD's NPI number?
JOSEPH AIYENOWO, MD's National Provider Identifier (NPI) is 1598792657, issued on 06/26/2006.
Does JOSEPH AIYENOWO, MD prescribe more brand-name or generic drugs?
JOSEPH AIYENOWO, MD's prescribing is 14% brand-name and 86% generic drugs by claim count, with $124K in brand drug costs.
Does JOSEPH AIYENOWO, MD prescribe opioids?
Yes, JOSEPH AIYENOWO, MD had 23 opioid claims in 2023 with an opioid prescribing rate of 1.9%.
How many Pediatrics Physician providers are there in the US?
There are 80,574 Pediatrics Physician providers across 56 states in the US. The average Pediatrics Physician provider writes 762 Medicare Part D claims per year.
What drugs does JOSEPH AIYENOWO, MD prescribe most often?
Based on 2023 Medicare Part D data, JOSEPH AIYENOWO, MD's most frequently prescribed drugs include Atorvastatin Calcium, Lisinopril, Fluticasone Propionate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JOSEPH AIYENOWO, MD accept Medicare?
JOSEPH AIYENOWO, MD appears in CMS Medicare data with 1,197 Part D claims and 332 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JOSEPH AIYENOWO, MD's credentials?
JOSEPH AIYENOWO, MD's NPI is 1598792657 with credentials MD. 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