2026 NPPES data Nephrology Physician NPI 1184670630 MD
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AZITA MESBAH, MD

Nephrology Physician in IRVINE, 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
612
Medicare Part D claims · 109 beneficiaries · Nephrology Physician avg: 1K
Industry payments
$561.29
14 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

AZITA MESBAH, MD filed 612 Medicare Part D claims in 2023 as a Nephrology Physician in IRVINE, California.

612
Part D claims, 2023
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.

AZITA MESBAH, MD's Medicare Part D volume vs every U.S. prescriber

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

612 Top 31% higher than 69% 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%). This entry sits in this band. 800–1,000: 40,919 prescribers (3%). Above this entry. 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)

AZITA MESBAH, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — 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 AZITA MESBAH, MD?

Quality data not reported

NPI registry status

Active

Issued 05/26/2006

NPI 1184670630

Primary specialty

Nephrology Physician

Mid-sized

10,534 US NPIs in this specialty

Medicare Part D claims

612 58% vs specialty avg

2023 prescription claims

Specialty avg: 1,454

Specialty distribution in California

How Nephrology Physician compares to other specialties among California providers

California providers

Nephrology Physician share within California

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

Specialty board-certification context

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

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

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

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

AZITA MESBAH, MD appears in the CMS NPPES registry as a Nephrology Physician provider holding MD credentials at 16305 SAND CANYON AVE, IRVINE, CA, 92618, with a listed phone of (949) 244-4731. NPI 1184670630 was issued on 05/26/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what MESBAH 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 612 prescription claims written by this provider, covering 109 Medicare beneficiaries and totaling roughly $246K in drug spend. 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.

Nephrology Physician is a mid-sized specialty nationwide, with 10,534 enrolled providers across 55 states and an average of 1,454 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

16305 SAND CANYON AVE
IRVINE, CA 92618

Provider Details

NPI 1184670630
Specialty Nephrology Physician
Credentials MD
Gender Female
NPI Issued 05/26/2006

Hospital and facility affiliations

Facilities where AZITA MESBAH, MD 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.

CADUCEUS PHYSICIANS MEDICAL GROUP
YORBA LINDA, CA
GUAM HEALTHCARE DEVELOPMENT INCORPORATED
DEDEDO, GU

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

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 AZITA MESBAH, MD. Source: openpaymentsdata.cms.gov.

Total received

$561

Largest payer

AstraZeneca Pharmaceuticals LP

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 AZITA MESBAH, MD. To verify AZITA MESBAH, MD'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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

612
Total Claims
$246K
Total Drug Cost
109
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
1,303
Total Day Supply
38,294
Generic Drug Cost
$60K
Antibiotic Claims
29

Patient Demographics

Average Patient Age
74.7 years
Avg HCC Risk Score
3.73
Gender Split
39% female / 61% male
Age Distribution
<65: 11, 65-74: 39, 75-84: 40, 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 AZITA MESBAH, MD 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
Farxiga
Dapagliflozin Propanediol
48
Allopurinol
44
Calcitriol
37
Carvedilol
36
Sevelamer Carbonate
31
Amlodipine Besylate
28
Velphoro
Sucroferric Oxyhydroxide
28
Olmesartan Medoxomil
23
Lisinopril
21
Furosemide
18

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

Nephrology Physician Overview

How AZITA MESBAH, MD fits within the Nephrology Physician landscape nationally.

10,534
Nephrology Physician Providers in US
55
States with Nephrology Physician
1,454
Avg Claims per Provider

AZITA MESBAH, MD's 612 claims are below the specialty average of 1,454.

Nearby Nephrology Physician Providers in California

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

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

Frequently Asked Questions

What is AZITA MESBAH, MD's specialty?
AZITA MESBAH, MD specializes in Nephrology Physician and practices in IRVINE, California. Credentials: MD.
How much does AZITA MESBAH, MD prescribe under Medicare Part D?
In 2023, AZITA MESBAH, MD wrote 612 Medicare Part D claims totaling $246K in drug costs for 109 beneficiaries.
Where is AZITA MESBAH, MD located?
AZITA MESBAH, MD is located at 16305 SAND CANYON AVE, IRVINE, CA, 92618. Phone: (949) 244-4731.
What is AZITA MESBAH, MD's NPI number?
AZITA MESBAH, MD's National Provider Identifier (NPI) is 1184670630, issued on 05/26/2006.
How many Nephrology Physician providers are there in the US?
There are 10,534 Nephrology Physician providers across 55 states in the US. The average Nephrology Physician provider writes 1,454 Medicare Part D claims per year.
What drugs does AZITA MESBAH, MD prescribe most often?
Based on 2023 Medicare Part D data, AZITA MESBAH, MD's most frequently prescribed drugs include Farxiga, Allopurinol, Calcitriol. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AZITA MESBAH, MD accept Medicare?
AZITA MESBAH, MD appears in CMS Medicare data with 612 Part D claims and 109 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify AZITA MESBAH, MD's credentials?
AZITA MESBAH, MD's NPI is 1184670630 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