2026 NPPES data Neurology Physician NPI 1164426953 M.D.
Verify on CMS →

AMIRHASSAN BAHREMAN, M.D.

Neurology Physician in LA MESA, 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
2K
Medicare Part D claims · 294 beneficiaries · Neurology Physician avg: 1K
Generic prescribing
87%
generic claims · 13% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
0/100
▼ 83 pts below national avg 83.1 · [object Object]
Industry payments
$4.2K
167 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

AMIRHASSAN BAHREMAN, M.D. reported a CMS MIPS final score of 0/100 — below the 83.1 national average — and filed 1,546 Medicare Part D claims in 2023.

0/100
MIPS score · -83 vs avg
2K
Part D claims, 2023
87%
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.

AMIRHASSAN BAHREMAN, 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

0 0th percentile higher than 0% of 477,587 scored providers

0–10: 8,684 scored providers (2%). This entry sits in this band. 10–20: 3,008 scored providers (1%). Above this entry. 20–30: 3,069 scored providers (1%). Above this entry. 30–40: 2,746 scored providers (1%). Above this entry. 40–50: 2,928 scored providers (1%). Above this entry. 50–60: 5,882 scored providers (1%). Above this entry. 60–70: 13,906 scored providers (3%). Above this entry. 70–80: 118,074 scored providers (25%). Above this entry. 80–90: 129,887 scored providers (27%). Above this entry. 90–100: 189,403 scored providers (40%). Above this entry. This provider 0 100 every MIPS-scored clinician, bucketed by value

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

Board certification likely (heuristic — not verified)

AMIRHASSAN BAHREMAN, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting — 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 AMIRHASSAN BAHREMAN, M.D.?

Below national average

NPI registry status

Active

Issued 06/09/2005

NPI 1164426953

Primary specialty

Neurology Physician

Mid-sized

19,866 US NPIs in this specialty

Medicare Part D claims

1,546 18% vs specialty avg

2023 prescription claims

Specialty avg: 1,309

MIPS final score

0/100 83.1% pts

Penalty band band

vs 83.1 national avg

Specialty distribution in California

How Neurology Physician compares to other specialties among California providers

California providers

Neurology Physician share within California

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

Medicare quality performance — MIPS

AMIRHASSAN BAHREMAN, M.D.'s 2023 MIPS final score plotted against the Neurology Physician national average

Below national average
MIPS Final Score
0/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Neurology Physician) — 0/100 vs national avg 83.1

0%100%National avg83%0%
MIPS final score (Neurology Physician) — 0/100 vs national avg 83.1

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).

AMIRHASSAN BAHREMAN, M.D. appears in the CMS NPPES registry as a Neurology Physician provider holding M.D. credentials at 8851 CENTER DR, LA MESA, CA, 91942, with a listed phone of (619) 460-5850. NPI 1164426953 was issued on 06/09/2005. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what BAHREMAN 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 1,546 prescription claims written by this provider, covering 294 Medicare beneficiaries and totaling roughly $658K in drug spend, split 13% brand-name and 87% 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 0/100 for the 2023 performance year (Quality 0), compared with the national average of 83.1.

Neurology Physician is a mid-sized specialty nationwide, with 19,866 enrolled providers across 54 states and an average of 1,309 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

8851 CENTER DR
LA MESA, CA 91942

Provider Details

NPI 1164426953
Specialty Neurology Physician
Credentials M.D.
Gender Male
NPI Issued 06/09/2005

CMS Quality Score (MIPS)

Merit-based Incentive Payment System (MIPS) scores from CMS, 2023 performance year.

0
Final Score
Avg: 83.1
0
Quality

Reporting: Individual

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 AMIRHASSAN BAHREMAN, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$4.2K

Largest payer

UCB, 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.

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 AMIRHASSAN BAHREMAN, M.D.. To verify AMIRHASSAN BAHREMAN, 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.

Brand vs generic prescribing mix · Typical

AMIRHASSAN BAHREMAN, M.D. — brand share 13.0%
Specialty average (est.)

13% brand-name claims vs 87% generic, on 1,546 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.

1,546
Total Claims
$658K
Total Drug Cost
294
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,236
Total Day Supply
64,990
Brand vs Generic
13% brand / 87% generic
Brand Drug Cost
$533K
Generic Drug Cost
$124K

Patient Demographics

Average Patient Age
73.9 years
Avg HCC Risk Score
1.70
Gender Split
60% female / 40% male
Age Distribution
<65: 32, 65-74: 112, 75-84: 109, 85+: 41

Top Prescribed Drugs (Medicare Part D)

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

What AMIRHASSAN BAHREMAN, 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
Carbidopa-Levodopa
Carbidopa/Levodopa
254
Levetiracetam
177
Gabapentin
142
Donepezil Hcl
130
Lacosamide
42
Primidone
42
Diclofenac Sodium
35
Duloxetine Hcl
35
Memantine Hcl
35
Pregabalin
28

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

Neurology Physician Overview

How AMIRHASSAN BAHREMAN, M.D. fits within the Neurology Physician landscape nationally.

19,866
Neurology Physician Providers in US
54
States with Neurology Physician
1,309
Avg Claims per Provider

AMIRHASSAN BAHREMAN, M.D.'s 1,546 claims are above the specialty average of 1,309.

Nearby Neurology Physician Providers in California

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

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

Frequently Asked Questions

What is AMIRHASSAN BAHREMAN, M.D.'s specialty?
AMIRHASSAN BAHREMAN, M.D. specializes in Neurology Physician and practices in LA MESA, California. Credentials: M.D..
How much does AMIRHASSAN BAHREMAN, M.D. prescribe under Medicare Part D?
In 2023, AMIRHASSAN BAHREMAN, M.D. wrote 1,546 Medicare Part D claims totaling $658K in drug costs for 294 beneficiaries.
What is AMIRHASSAN BAHREMAN, M.D.'s Medicare quality score?
AMIRHASSAN BAHREMAN, M.D. has a CMS MIPS Final Score of 0/100 (Quality: 0). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is AMIRHASSAN BAHREMAN, M.D. located?
AMIRHASSAN BAHREMAN, M.D. is located at 8851 CENTER DR, LA MESA, CA, 91942. Phone: (619) 460-5850.
What is AMIRHASSAN BAHREMAN, M.D.'s NPI number?
AMIRHASSAN BAHREMAN, M.D.'s National Provider Identifier (NPI) is 1164426953, issued on 06/09/2005.
Does AMIRHASSAN BAHREMAN, M.D. prescribe more brand-name or generic drugs?
AMIRHASSAN BAHREMAN, M.D.'s prescribing is 13% brand-name and 87% generic drugs by claim count, with $533K in brand drug costs.
How many Neurology Physician providers are there in the US?
There are 19,866 Neurology Physician providers across 54 states in the US. The average Neurology Physician provider writes 1,309 Medicare Part D claims per year.
What drugs does AMIRHASSAN BAHREMAN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, AMIRHASSAN BAHREMAN, M.D.'s most frequently prescribed drugs include Carbidopa-Levodopa, Levetiracetam, Gabapentin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AMIRHASSAN BAHREMAN, M.D. accept Medicare?
AMIRHASSAN BAHREMAN, M.D. appears in CMS Medicare data with 1,546 Part D claims and 294 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify AMIRHASSAN BAHREMAN, M.D.'s credentials?
AMIRHASSAN BAHREMAN, M.D.'s NPI is 1164426953 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.
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