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2026 NPPES data Allergy & Immunology (Internal Medicine) Physician NPI 1912959925 M.D.
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Abraham Ishaaya, M.D.

Allergy & Immunology (Internal Medicine) Physician in Los Angeles, California.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 520 in Allergy & Immunology (Internal Medicine) Physician, 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.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
17K
Medicare Part D claims · 864 beneficiaries · Allergy & Immunology (Internal Medicine) Physician avg: 798
Generic prescribing
69%
generic claims · 30% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
87.7/100
▲ 5 pts above national avg 83.1 · Above neutral
Industry payments
$3.6K
136 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Abraham Ishaaya, M.D. reported a CMS MIPS final score of 87.7/100 - above the 83.1 national average - and filed 17,041 Medicare Part D claims in 2023.

87.7/100
MIPS score · +5 vs avg
17K
Part D claims, 2023
69%
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.

Abraham Ishaaya, 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

88 Top 46% higher than 54% 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%). This entry sits in this band. 90+: 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

Where Abraham Ishaaya, M.D. sits

This provider among allergy & immunology (internal medicine) physician peers

Across the 130 allergy & immunology (internal medicine) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Abraham Ishaaya, M.D. writes more Part D claims than 98% of them and scores higher on MIPS quality than 69% - 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

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 95Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 23Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 75Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 25Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 98Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 93Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 53Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 52Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 28Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 98Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 70Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 50Abraham Ishaaya, M.D.-Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 69
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one allergy & immunology (internal medicine) physician peer from a representative sample of 60; the gold marker is Abraham Ishaaya, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

Abraham Ishaaya, 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).

What does the federal data show about Abraham Ishaaya, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 05/17/2006

NPI 1912959925

Primary specialty

Allergy & Immunology (Internal Medicine) Physician

Niche

520 US NPIs in this specialty

Medicare Part D claims

17,041 21× vs specialty avg

2023 prescription claims

Specialty avg: 798

MIPS final score

87.7/100 4.6 pts vs avg

Above neutral band

vs 83.1 national avg

Specialty distribution in California

How Allergy & Immunology (Internal Medicine) Physician compares to other specialties among California providers

California providers
Behavior Technician - 17.3%Behavior Technician17.3%Marriage & Family Therapist - 5.5%Marriage & Family Therapist5.5%Student in an Organized Health Care Education/Training Program - 5%Student in an Organized Health Care Education/Training Program5%Mental Health Counselor - 3.9%Mental Health Counselor3.9%Pharmacist - 3.5%Pharmacist3.5%Clinical Social Worker - 3.1%Clinical Social Worker3.1%Allergy & Immunology (Internal Medicine) Physician - 0%Allergy & Immunology (Internal Medicine) Physician0%
Largest specialties in California (% of in-state providers)

Medicare quality performance, MIPS

Abraham Ishaaya, M.D.'s 2023 MIPS final score plotted against the Allergy & Immunology (Internal Medicine) Physician national average

High performer (top quartile)
MIPS Final Score
87.7/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Allergy & Immunology (Internal Medicine) Physician) - 87.7/100 vs national avg 83.1

0%100%National avg83%87.7%
MIPS final score (Allergy & Immunology (Internal Medicine) Physician) - 87.7/100 vs national avg 83.1
How MIPS and board certification work

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).

Abraham Ishaaya, M.D. appears in the CMS NPPES registry as a Allergy & Immunology (Internal Medicine) Physician provider holding M.D. credentials at 5901 W OLYMPIC BLVD, Los Angeles, CA, 90036, with a listed phone of (323) 954-1788. NPI 1912959925 was issued on 05/17/2006.

Medicare Part D records for calendar year 2023 show 17,041 prescription claims written by this provider, covering 864 Medicare beneficiaries and totaling roughly $4.4 million in drug spend, split 30% brand-name and 69% generic by claim count, with an opioid prescribing rate of 1.5%. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 87.7/100 for the 2023 performance year (Quality 95.5, Cost 31.6), compared with the national average of 83.1.

Allergy & Immunology (Internal Medicine) Physician is a narrow specialty nationwide, with 520 enrolled providers across 48 states and an average of 798 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

5901 W OLYMPIC BLVD
Los Angeles, CA 90036
(323) 954-1788

Provider Details

NPI 1912959925
Specialty Allergy & Immunology (Internal Medicine) Physician
Credentials M.D.
Gender Male
NPI Issued 05/17/2006

CMS Quality Score (MIPS)

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

87.6788
Final Score
Avg: 83.1
95.4647
Quality
31.643
Cost

Reporting: Individual

Hospital and facility affiliations

Facilities where Abraham Ishaaya, 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.

Abraham Ishaaya M D A Professional Corporation
Los Angeles, 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 Abraham Ishaaya, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$3.6K

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 Abraham Ishaaya, M.D.. To verify Abraham Ishaaya, 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 · Above average

Abraham Ishaaya, M.D. - brand share 30.0%
Allergy & Immunology (Internal Medicine) Physician average

30% brand-name claims vs 69% generic, on 17,041 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.

17,041
Total Claims
$4.4M
Total Drug Cost
864
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
20,892
Total Day Supply
510,631
Brand vs Generic
30% brand / 69% generic
Brand Drug Cost
$3.6M
Generic Drug Cost
$819K
Opioid Claims
262 (1.5% rate)
Antibiotic Claims
500

Patient Demographics

Average Patient Age
73.9 years
Avg HCC Risk Score
2.30
Gender Split
58% female / 42% male
Age Distribution
<65: 101, 65-74: 366, 75-84: 258, 85+: 139

Top Prescribed Drugs (Medicare Part D)

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

What Abraham Ishaaya, 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
Amlodipine Besylate
 530
Albuterol Sulfate Hfa
Albuterol Sulfate
513
Fluticasone Propionate
 498
Azelastine Hcl
 406
Atorvastatin Calcium
 404
Trelegy Ellipta
Fluticasone/Umeclidin/Vilanter
394
Montelukast Sodium
 374
Levothyroxine Sodium
 372
Eliquis
Apixaban
333
Breo Ellipta
Fluticasone/Vilanterol
322

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

More Allergy & Immunology (Internal Medicine) Physician in CA → All providers in California → Compare specialties →

Allergy & Immunology (Internal Medicine) Physician Overview

How Abraham Ishaaya, M.D. fits within the Allergy & Immunology (Internal Medicine) Physician landscape nationally.

520
Allergy & Immunology (Internal Medicine) Physician Providers in US
48
States with Allergy & Immunology (Internal Medicine) Physician
798
Avg Claims per Provider

Abraham Ishaaya, M.D.'s 17,041 claims are above the specialty average of 798.

Nearby Allergy & Immunology (Internal Medicine) Physician Providers in California

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

Dr. Shields Abernathy
M.D.
Templeton, CA
Dr. Edsel Abud
MD, PHD
La Jolla, CA
Dr. Sam Ahn
M.D.
Napa, CA
Dr. Fatima Ali
MD
Sacramento, CA
Dr. Lorraine Anderson
MD
Santa Monica, CA

Compare Allergy & Immunology (Internal Medicine) Physician 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 California medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Allergy & Immunology (Internal Medicine) Physician 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

What is Abraham Ishaaya, M.D.'s specialty? ▼
Abraham Ishaaya, M.D. specializes in Allergy & Immunology (Internal Medicine) Physician and practices in Los Angeles, California. Credentials: M.D..
How much does Abraham Ishaaya, M.D. prescribe under Medicare Part D? ▼
In 2023, Abraham Ishaaya, M.D. wrote 17,041 Medicare Part D claims totaling $4.4M in drug costs for 864 beneficiaries.
What is Abraham Ishaaya, M.D.'s Medicare quality score? ▼
Abraham Ishaaya, M.D. has a CMS MIPS Final Score of 87.7/100 (Quality: 95.5, Cost: 31.6). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Abraham Ishaaya, M.D. located? ▼
Abraham Ishaaya, M.D. is located at 5901 W OLYMPIC BLVD, Los Angeles, CA, 90036. Phone: (323) 954-1788.
What is Abraham Ishaaya, M.D.'s NPI number? ▼
Abraham Ishaaya, M.D.'s National Provider Identifier (NPI) is 1912959925, issued on 05/17/2006.
Does Abraham Ishaaya, M.D. prescribe more brand-name or generic drugs? ▼
Abraham Ishaaya, M.D.'s prescribing is 30% brand-name and 69% generic drugs by claim count, with $3.6M in brand drug costs.
Does Abraham Ishaaya, M.D. prescribe opioids? ▼
Yes, Abraham Ishaaya, M.D. had 262 opioid claims in 2023 with an opioid prescribing rate of 1.5%.
How many Allergy & Immunology (Internal Medicine) Physician providers are there in the US? ▼
There are 520 Allergy & Immunology (Internal Medicine) Physician providers across 48 states in the US. The average Allergy & Immunology (Internal Medicine) Physician provider writes 798 Medicare Part D claims per year.
What drugs does Abraham Ishaaya, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Abraham Ishaaya, M.D.'s most frequently prescribed drugs include Amlodipine Besylate, Albuterol Sulfate Hfa, Fluticasone Propionate. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Abraham Ishaaya, M.D. accept Medicare? ▼
Abraham Ishaaya, M.D. appears in CMS Medicare data with 17,041 Part D claims and 864 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Abraham Ishaaya, M.D.'s credentials? ▼
Abraham Ishaaya, M.D.'s NPI is 1912959925 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

View source datasets and methodology notes
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

Compiled from official public sources by the PlainDoctor editorial team.