Ashok Narayan, M.D.
Specialist in Mesa, Arizona. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers — including 69,658 in Specialist, 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.
Source: CMS Medicare Part D Prescriber Public Use File, 2023
What the federal data shows
Ashok Narayan, M.D. reported a CMS MIPS final score of 83.2/100 — above the 83.1 national average — and filed 1,377 Medicare Part D claims in 2023.
- 83.2/100
- MIPS score · +0 vs avg
- 1K
- Part D claims, 2023
- 93%
- generic prescribing
- $174.45
- industry payments (Sunshine Act)
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.
Ashok Narayan, M.D.'s MIPS score vs every scored U.S. clinician
CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure
83 42nd percentile higher than 42% of 477,587 scored providers
Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023
Where Ashok Narayan, M.D. sits
This provider among specialist peers
Across the 4,869 specialist providers who report both Medicare Part D prescribing and a MIPS quality score, Ashok Narayan, M.D. writes more Part D claims than 62% of them and scores higher on MIPS quality than 54% — placing this provider in the high-volume, high-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.
Part D claim volume vs MIPS quality, by specialty percentile
Each dot is one specialist peer from a representative sample of 60; the gold marker is Ashok Narayan, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.
What does the federal data show about Ashok Narayan, M.D.?
Near national averagePrimary specialty
Medicare Part D claims
MIPS final score
Specialty distribution in Arizona
How Specialist compares to other specialties among Arizona providers
Largest specialties in Arizona (% of in-state providers)
Specialist ranks #37 among Arizona's specialties (0.8% of in-state providers)
Each bar is a specialty's share of the Arizona provider total, by primary NUCC taxonomy. The highlighted bar is Specialist; the long tail of smaller specialties is omitted for legibility.
Medicare quality performance — MIPS
Ashok Narayan, M.D.'s 2023 MIPS final score plotted against the Specialist national average
- MIPS Final Score
- 83.2/100
- vs 83.1 national avg · 2023 performance year
MIPS final score (Specialist) — 83.2/100 vs national avg 83.1
Quality benchmarks
- National MIPS avg 2023 reporting year
- Quality dim CMS Quality category
- Cost dim CMS Cost category
- Specialty volume Specialist US NPIs
83.2/100 MIPS final score — 0.1 pts above the 83.1 national average
Quality, Cost, Promoting Interoperability, and Improvement Activities composite score for the 2023 performance year. Specialty: Specialist. Quality dim: 87.7. Cost dim: 71.3.
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).
Ashok Narayan, M.D. appears in the CMS NPPES registry as a Specialist provider holding M.D. credentials at 1520 S DOBSON RD STE 206, Mesa, AZ, 85202, with a listed phone of (480) 412-8080. NPI 1184626095 was issued on 08/10/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Narayan 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 1,377 prescription claims written by this provider, covering 307 Medicare beneficiaries and totaling roughly $350K in drug spend, split 6% brand-name and 93% generic by claim count. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 83.2/100 for the 2023 performance year (Quality 87.7, Cost 71.3), compared with the national average of 83.1.
Specialist is a high-volume specialty nationwide, with 69,658 enrolled providers across 55 states and an average of 1,474 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 | 1184626095 |
|---|---|
| Specialty | Specialist |
| Credentials | M.D. |
| Gender | Male |
| NPI Issued | 08/10/2005 |
Verify this provider's license
PlainDoctor pulls this profile from the CMS NPPES public registry. Confirm Ashok Narayan, M.D.'s current license status, disciplinary history, and board certifications with the Arizona Medical Board in Arizona before relying on this page for a clinical or care decision.
How we sourced this profile
CMS Quality Score (MIPS)
Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.
Reporting: Group practice
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 Ashok Narayan, M.D.. Source: openpaymentsdata.cms.gov.
Total received
$174
Largest payer
ARGENX US, 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.
Brand vs generic prescribing mix · Generic-heavy
6% brand-name claims vs 93% generic, on 1,377 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
- 2,436
- Total Day Supply
- 71,607
- Brand vs Generic
- 6% brand / 93% generic
- Brand Drug Cost
- $203K
- Generic Drug Cost
- $147K
Patient Demographics
- Average Patient Age
- 68.4 years
- Avg HCC Risk Score
- 1.68
- Gender Split
- 58% female / 42% male
- Age Distribution
- <65: 90, 65-74: 103, 75-84: 95, 85+: 19
Top Prescribed Drugs (Medicare Part D)
Top drugs by claim count for calendar year 2023. Based on Medicare Part D data only.
What Ashok Narayan, M.D. prescribes most
Top Medicare Part D drugs by claim count, 2023
- Memantine Hcl
Memantine Hcl
155 claims
- Gabapentin
Gabapentin
132 claims
- Levetiracetam
Levetiracetam
101 claims
- Donepezil Hcl
Donepezil Hcl
82 claims
- Topiramate
Topiramate
63 claims
- Lamotrigine 44
Lamotrigine
44 claims
- Carbamazepine Er 38
Carbamazepine Er
38 claims
- Sumatriptan Succin… 27
Sumatriptan Succinate
27 claims
| Drug | Claims |
|---|---|
| Memantine Hcl | 155 |
| Gabapentin | 132 |
| Levetiracetam | 101 |
| Donepezil Hcl | 82 |
| Topiramate | 63 |
| Lamotrigine | 44 |
| Carbamazepine Er Carbamazepine | 38 |
| Sumatriptan Succinate | 27 |
| Baclofen | 25 |
| Carbidopa-Levodopa Carbidopa/Levodopa | 25 |
* Counts below 11 are suppressed by CMS for patient privacy. Generic names shown where available from CMS Part D data.
Specialist Overview
How Ashok Narayan, M.D. fits within the Specialist landscape nationally.
Ashok Narayan, M.D.'s 1,377 claims are below the specialty average of 1,474.
Nearby Specialist Providers in Arizona
Other clinicians with the same primary specialty enrolled in Arizona, drawn from the same CMS NPPES roster as Narayan.
Compare Specialist 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 Arizona medical board — federal registration is not a license check. Credential verification guide
- Weigh a second option: compare this provider with a nearby Specialist 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.
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Frequently Asked Questions
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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.
- Quality Performance
- CMS Merit-based Incentive Payment System (MIPS) — 2023 performance year.
- 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