2026 NPPES data Behavioral Neurology & Neuropsychiatry Physician NPI 1902809353 M.D.
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SIAVASH NAEL, M.D.

Behavioral Neurology & Neuropsychiatry Physician in OKLAHOMA CITY, Oklahoma. 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
997
Medicare Part D claims · 69 beneficiaries · Behavioral Neurology & Neuropsychiatry Physician avg: 804
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

SIAVASH NAEL, M.D. filed 997 Medicare Part D claims in 2023 as a Behavioral Neurology & Neuropsychiatry Physician in OKLAHOMA CITY, Oklahoma, prescribing 94% generic.

997
Part D claims, 2023
94%
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.

SIAVASH NAEL, M.D.'s Medicare Part D volume vs every U.S. prescriber

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

997 Top 25% higher than 75% 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%). This entry sits in this band. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. 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)

SIAVASH NAEL, 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 SIAVASH NAEL, M.D.?

Quality data not reported

NPI registry status

Active

Issued 05/31/2005

NPI 1902809353

Primary specialty

Behavioral Neurology & Neuropsychiatry Physician

Rare

268 US NPIs in this specialty

Medicare Part D claims

997 24% vs specialty avg

2023 prescription claims

Specialty avg: 804

Specialty distribution in Oklahoma

How Behavioral Neurology & Neuropsychiatry Physician compares to other specialties among Oklahoma providers

Oklahoma providers

Behavioral Neurology & Neuropsychiatry Physician share within Oklahoma

1. Behavioral Neurology & Neuropsychiatry Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Behavioral Neurology & Neuropsychiatry Physician share within Oklahoma

Specialty board-certification context

Estimated specialty board-certified rate — Behavioral Neurology & Neuropsychiatry Physician (ABMS / AOA reference)

Quality data not reported
Est. board-certified rate
78%
Behavioral Neurology & Neuropsychiatry Physician ABMS/AOA estimate

Est. board-certified rate (Behavioral Neurology & Neuropsychiatry Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Behavioral Neurology & Neuropsychiatry 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).

SIAVASH NAEL, M.D. appears in the CMS NPPES registry as a Behavioral Neurology & Neuropsychiatry Physician provider holding M.D. credentials at 4720 S WESTERN AVE, OKLAHOMA CITY, OK, 73109, with a listed phone of (405) 634-5529. NPI 1902809353 was issued on 05/31/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what NAEL 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 997 prescription claims written by this provider, covering 69 Medicare beneficiaries and totaling roughly $71K in drug spend, split 6% brand-name and 94% 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.

Behavioral Neurology & Neuropsychiatry Physician is a narrow specialty nationwide, with 268 enrolled providers across 43 states and an average of 804 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

4720 S WESTERN AVE
OKLAHOMA CITY, OK 73109

Provider Details

NPI 1902809353
Specialty Behavioral Neurology & Neuropsychiatry Physician
Credentials M.D.
Gender Male
NPI Issued 05/31/2005

Hospital and facility affiliations

Facilities where SIAVASH NAEL, 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.

ABSENTEE SHAWNEE TRIBAL HEALTH AUTHORITY, INC
NORMAN, OK

Affiliations sourced from CMS Doctors and Clinicians National Downloadable File; hospital ratings from CMS Hospital General Information dataset (cross-referenced by facility name + state).

Brand vs generic prescribing mix · Generic-heavy

SIAVASH NAEL, M.D. — brand share 6.0%
Specialty average (est.)

6% brand-name claims vs 94% generic, on 997 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.

997
Total Claims
$71K
Total Drug Cost
69
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,014
Total Day Supply
29,916
Brand vs Generic
6% brand / 94% generic
Brand Drug Cost
$12K
Generic Drug Cost
$59K

Patient Demographics

Average Patient Age
58.1 years
Avg HCC Risk Score
1.27
Gender Split
65% female / 35% male
Age Distribution
<65: 39, 65-74: 18, 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 SIAVASH NAEL, 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
Escitalopram Oxalate
50
Risperidone
49
Sertraline Hcl
48
Duloxetine Hcl
47
Doxepin Hcl
45
Bupropion Hcl Sr
Bupropion Hcl
44
Venlafaxine Hcl Er
Venlafaxine Hcl
42
Olanzapine
41
Fluoxetine Hcl
39
Propranolol Hcl
39

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

Behavioral Neurology & Neuropsychiatry Physician Overview

How SIAVASH NAEL, M.D. fits within the Behavioral Neurology & Neuropsychiatry Physician landscape nationally.

268
Behavioral Neurology & Neuropsychiatry Physician Providers in US
43
States with Behavioral Neurology & Neuropsychiatry Physician
804
Avg Claims per Provider

SIAVASH NAEL, M.D.'s 997 claims are above the specialty average of 804.

Nearby Behavioral Neurology & Neuropsychiatry Physician Providers in Oklahoma

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

Compare Behavioral Neurology & Neuropsychiatry Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is SIAVASH NAEL, M.D.'s specialty?
SIAVASH NAEL, M.D. specializes in Behavioral Neurology & Neuropsychiatry Physician and practices in OKLAHOMA CITY, Oklahoma. Credentials: M.D..
How much does SIAVASH NAEL, M.D. prescribe under Medicare Part D?
In 2023, SIAVASH NAEL, M.D. wrote 997 Medicare Part D claims totaling $71K in drug costs for 69 beneficiaries.
Where is SIAVASH NAEL, M.D. located?
SIAVASH NAEL, M.D. is located at 4720 S WESTERN AVE, OKLAHOMA CITY, OK, 73109. Phone: (405) 634-5529.
What is SIAVASH NAEL, M.D.'s NPI number?
SIAVASH NAEL, M.D.'s National Provider Identifier (NPI) is 1902809353, issued on 05/31/2005.
Does SIAVASH NAEL, M.D. prescribe more brand-name or generic drugs?
SIAVASH NAEL, M.D.'s prescribing is 6% brand-name and 94% generic drugs by claim count, with $12K in brand drug costs.
How many Behavioral Neurology & Neuropsychiatry Physician providers are there in the US?
There are 268 Behavioral Neurology & Neuropsychiatry Physician providers across 43 states in the US. The average Behavioral Neurology & Neuropsychiatry Physician provider writes 804 Medicare Part D claims per year.
What drugs does SIAVASH NAEL, M.D. prescribe most often?
Based on 2023 Medicare Part D data, SIAVASH NAEL, M.D.'s most frequently prescribed drugs include Escitalopram Oxalate, Risperidone, Sertraline Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does SIAVASH NAEL, M.D. accept Medicare?
SIAVASH NAEL, M.D. appears in CMS Medicare data with 997 Part D claims and 69 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify SIAVASH NAEL, M.D.'s credentials?
SIAVASH NAEL, M.D.'s NPI is 1902809353 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