2026 NPPES data Gastroenterology Physician NPI 1578806089 M.D.
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DAVID ALEXANIAN, M.D.

Gastroenterology Physician in BURBANK, 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
1K
Medicare Part D claims · 406 beneficiaries · Gastroenterology Physician avg: 833
Generic prescribing
78%
generic claims · 22% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
100/100
▲ 17 pts above national avg 83.1 · [object Object]
Industry payments
$1.2K
52 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: DAVID ALEXANIAN, M.D. is a Gastroenterology Physician ([object Object]) practicing in BURBANK, California with a Medicare Part D prescribing footprint of 1K claims across 406 beneficiaries — 22% brand-name prescribing . Their CMS MIPS Final Score of 100/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities . Industry payments of $1.2K across 52 transactions are disclosed under CMS Open Payments (Sunshine Act).

What the federal data shows

DAVID ALEXANIAN, M.D. reported a CMS MIPS final score of 100/100 — above the 83.1 national average — and filed 1,335 Medicare Part D claims in 2023.

100/100
MIPS score · +17 vs avg
1K
Part D claims, 2023
78%
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.

DAVID ALEXANIAN, 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

100 Top 7% higher than 93% of 477,587 scored providers

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

DAVID ALEXANIAN, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 1 hospital affiliation — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

DAVID ALEXANIAN, M.D. at a glance

High performer (top quartile)

NPI registry status

Active

Issued 04/03/2013

NPI 1578806089

Primary specialty

Gastroenterology Physician

Mid-sized

16,567 US NPIs in this specialty

Medicare Part D claims

1,335 60% vs specialty avg

2023 prescription claims

Specialty avg: 833

MIPS final score

100/100 16.900000000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in California

How Gastroenterology Physician compares to other specialties among California providers

California providers

Gastroenterology Physician share within California

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

Medicare quality performance — MIPS

DAVID ALEXANIAN, M.D.'s 2023 MIPS final score plotted against the Gastroenterology Physician national average

High performer (top quartile)
MIPS Final Score
100/100
vs 83.1 national avg · 2023 performance year

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

0%100%National avg83%99%
MIPS final score (Gastroenterology Physician) — 100/100 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).

DAVID ALEXANIAN, M.D. is a Gastroenterology Physician provider practicing in BURBANK, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1578806089. 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.

DAVID ALEXANIAN, M.D. appears in the CMS NPPES registry as a Gastroenterology Physician provider holding M.D. credentials at 201 S BUENA VISTA ST STE 410, BURBANK, CA, 91505, with a listed phone of (818) 845-3773. NPI 1578806089 was issued on 04/03/2013. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what ALEXANIAN 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 1,335 prescription claims written by this provider, covering 406 Medicare beneficiaries and totaling roughly $275K in drug spend, split 22% brand-name and 78% 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 100/100 for the 2023 performance year, compared with the national average of 83.1.

Gastroenterology Physician is a mid-sized specialty nationwide, with 16,567 enrolled providers across 54 states and an average of 833 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

201 S BUENA VISTA ST STE 410
BURBANK, CA 91505

Provider Details

NPI 1578806089
Specialty Gastroenterology Physician
Credentials M.D.
Gender Male
NPI Issued 04/03/2013

CMS Quality Score (MIPS)

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

100
Final Score
Avg: 83.1
99
Promoting Interoperability

Reporting: Individual

Hospital and facility affiliations

Facilities where DAVID ALEXANIAN, 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.

GENESIS HEALTHCARE PARTNERS PC
BURBANK, CA

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 DAVID ALEXANIAN, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$1.2K

Largest payer

ABBVIE 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 DAVID ALEXANIAN, M.D.. To verify DAVID ALEXANIAN, 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

DAVID ALEXANIAN, M.D. — brand share 22.0%
Specialty average (est.)

22% brand-name claims vs 78% generic, on 1,335 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.

1,335
Total Claims
$275K
Total Drug Cost
406
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
2,022
Total Day Supply
51,210
Brand vs Generic
22% brand / 78% generic
Brand Drug Cost
$179K
Generic Drug Cost
$95K
Antibiotic Claims
35

Patient Demographics

Average Patient Age
71.6 years
Avg HCC Risk Score
1.15
Gender Split
53% female / 47% male
Age Distribution
<65: 36, 65-74: 233, 75-84: 118, 85+: 19

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Omeprazole
385
Sucralfate
185
Pantoprazole Sodium
153
Plenvu
Peg3350/Sod Sul/Nacl/Kcl/Asb/C
75
Mesalamine
65
Famotidine
62
Peg 3350-Electrolyte
Sodium Chloride/Nahco3/Kcl/Peg
54
Linzess
Linaclotide
46
Clenpiq
Sod Picosulf/Mag Ox/Citric Ac
25
Lansoprazole
18

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

Gastroenterology Physician Overview

How DAVID ALEXANIAN, M.D. fits within the Gastroenterology Physician landscape nationally.

16,567
Gastroenterology Physician Providers in US
54
States with Gastroenterology Physician
833
Avg Claims per Provider

DAVID ALEXANIAN, M.D.'s 1,335 claims are above the specialty average of 833.

Nearby Gastroenterology Physician Providers in California

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

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

Frequently Asked Questions

What is DAVID ALEXANIAN, M.D.'s specialty?
DAVID ALEXANIAN, M.D. specializes in Gastroenterology Physician and practices in BURBANK, California. Credentials: M.D..
How much does DAVID ALEXANIAN, M.D. prescribe under Medicare Part D?
In 2023, DAVID ALEXANIAN, M.D. wrote 1,335 Medicare Part D claims totaling $275K in drug costs for 406 beneficiaries.
What is DAVID ALEXANIAN, M.D.'s Medicare quality score?
DAVID ALEXANIAN, M.D. has a CMS MIPS Final Score of 100/100. The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is DAVID ALEXANIAN, M.D. located?
DAVID ALEXANIAN, M.D. is located at 201 S BUENA VISTA ST STE 410, BURBANK, CA, 91505. Phone: (818) 845-3773.
What is DAVID ALEXANIAN, M.D.'s NPI number?
DAVID ALEXANIAN, M.D.'s National Provider Identifier (NPI) is 1578806089, issued on 04/03/2013.
Does DAVID ALEXANIAN, M.D. prescribe more brand-name or generic drugs?
DAVID ALEXANIAN, M.D.'s prescribing is 22% brand-name and 78% generic drugs by claim count, with $179K in brand drug costs.
How many Gastroenterology Physician providers are there in the US?
There are 16,567 Gastroenterology Physician providers across 54 states in the US. The average Gastroenterology Physician provider writes 833 Medicare Part D claims per year.
What drugs does DAVID ALEXANIAN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, DAVID ALEXANIAN, M.D.'s most frequently prescribed drugs include Omeprazole, Sucralfate, Pantoprazole Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DAVID ALEXANIAN, M.D. accept Medicare?
DAVID ALEXANIAN, M.D. appears in CMS Medicare data with 1,335 Part D claims and 406 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DAVID ALEXANIAN, M.D.'s credentials?
DAVID ALEXANIAN, M.D.'s NPI is 1578806089 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