2026 NPPES data Allergy & Immunology Physician NPI 1487725990 MD
Verify on CMS →

BARZIN KHALILI, MD

Allergy & Immunology Physician in PORTLAND, Oregon. 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
589
Medicare Part D claims · 110 beneficiaries · Allergy & Immunology Physician avg: 764
Generic prescribing
41%
generic claims · 59% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
97.83/100
▲ 15 pts above national avg 83.1 · [object Object]
What the federal data reveals: BARZIN KHALILI, MD is a Allergy & Immunology Physician ([object Object]) practicing in PORTLAND, Oregon with a Medicare Part D prescribing footprint of 589 claims across 110 beneficiaries — 59% brand-name prescribing . Their CMS MIPS Final Score of 97.83/100 (national average: 83.1) reflects performance across Quality, Cost, Interoperability, and Improvement Activities .

What stands out: BARZIN KHALILI, MD reported a CMS MIPS final score of 97.83 out of 100, above the 83.1 national average, and filed 589 Medicare Part D claims in 2023. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

BARZIN KHALILI, MD 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).

BARZIN KHALILI, MD at a glance

High performer (top quartile)

NPI registry status

Active

Issued 11/13/2006

NPI 1487725990

Primary specialty

Allergy & Immunology Physician

Niche

3,390 US NPIs in this specialty

Medicare Part D claims

589 23% vs specialty avg

2023 prescription claims

Specialty avg: 764

MIPS final score

97.83/100 14.730000000000004% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Oregon

How Allergy & Immunology Physician compares to other specialties among Oregon providers

Oregon providers

Allergy & Immunology Physician share within Oregon

1. Allergy & Immunology Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Allergy & Immunology Physician share within Oregon

Medicare quality performance — MIPS

BARZIN KHALILI, MD's 2023 MIPS final score plotted against the Allergy & Immunology Physician national average

High performer (top quartile)
MIPS Final Score
97.83/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Allergy & Immunology Physician) — 97.83/100 vs national avg 83.1

0%100%National avg83%97.8%
MIPS final score (Allergy & Immunology Physician) — 97.83/100 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).

BARZIN KHALILI, MD is a Allergy & Immunology Physician provider practicing in PORTLAND, Oregon, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1487725990. 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.

BARZIN KHALILI, MD appears in the CMS NPPES registry as a Allergy & Immunology Physician provider holding MD credentials at 511 SW 10TH AVE STE 1301, PORTLAND, OR, 97205, with a listed phone of (503) 228-0155. NPI 1487725990 was issued on 11/13/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KHALILI 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 589 prescription claims written by this provider, covering 110 Medicare beneficiaries and totaling roughly $389K in drug spend, split 59% brand-name and 41% 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 97.83/100 for the 2023 performance year (Quality 80.9759), compared with the national average of 83.1.

Allergy & Immunology Physician is a narrow specialty nationwide, with 3,390 enrolled providers across 52 states and an average of 764 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

511 SW 10TH AVE STE 1301
PORTLAND, OR 97205

Provider Details

NPI 1487725990
Specialty Allergy & Immunology Physician
Credentials MD
Gender Male
NPI Issued 11/13/2006

CMS Quality Score (MIPS)

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

97.83
Final Score
Avg: 83.1
80.9759
Quality
100
Promoting Interoperability

Reporting: Alternative Payment Model

Hospital and facility affiliations

Facilities where BARZIN KHALILI, 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.

BARZIN KHALILI MD LLC
PORTLAND, OR

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 · Brand-heavy

BARZIN KHALILI, MD — brand share 59.0%
Specialty average (est.)

59% brand-name claims vs 41% generic, on 589 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.

589
Total Claims
$389K
Total Drug Cost
110
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
916
Total Day Supply
25,983
Brand vs Generic
59% brand / 41% generic
Brand Drug Cost
$368K
Generic Drug Cost
$21K

Patient Demographics

Average Patient Age
72.7 years
Avg HCC Risk Score
0.86
Gender Split
65% female / 35% male

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Montelukast Sodium
81
Symbicort
Budesonide/Formoterol Fumarate
49
Azelastine Hcl
36
Advair Diskus
Fluticasone Propion/Salmeterol
35
Flovent Hfa
Fluticasone Propionate
33
Qvar Redihaler
Beclomethasone Dipropionate
33
Fluticasone Propionate
31
Epinephrine
29
Hizentra
Immun Glob G(Igg)/Pro/Iga 0-50
28
Albuterol Sulfate Hfa
Albuterol Sulfate
24

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

Allergy & Immunology Physician Overview

How BARZIN KHALILI, MD fits within the Allergy & Immunology Physician landscape nationally.

3,390
Allergy & Immunology Physician Providers in US
52
States with Allergy & Immunology Physician
764
Avg Claims per Provider

BARZIN KHALILI, MD's 589 claims are below the specialty average of 764.

Nearby Allergy & Immunology Physician Providers in Oregon

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

Compare Allergy & Immunology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is BARZIN KHALILI, MD's specialty?
BARZIN KHALILI, MD specializes in Allergy & Immunology Physician and practices in PORTLAND, Oregon. Credentials: MD.
How much does BARZIN KHALILI, MD prescribe under Medicare Part D?
In 2023, BARZIN KHALILI, MD wrote 589 Medicare Part D claims totaling $389K in drug costs for 110 beneficiaries.
What is BARZIN KHALILI, MD's Medicare quality score?
BARZIN KHALILI, MD has a CMS MIPS Final Score of 97.83/100 (Quality: 80.9759). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is BARZIN KHALILI, MD located?
BARZIN KHALILI, MD is located at 511 SW 10TH AVE STE 1301, PORTLAND, OR, 97205. Phone: (503) 228-0155.
What is BARZIN KHALILI, MD's NPI number?
BARZIN KHALILI, MD's National Provider Identifier (NPI) is 1487725990, issued on 11/13/2006.
Does BARZIN KHALILI, MD prescribe more brand-name or generic drugs?
BARZIN KHALILI, MD's prescribing is 59% brand-name and 41% generic drugs by claim count, with $368K in brand drug costs.
How many Allergy & Immunology Physician providers are there in the US?
There are 3,390 Allergy & Immunology Physician providers across 52 states in the US. The average Allergy & Immunology Physician provider writes 764 Medicare Part D claims per year.
What drugs does BARZIN KHALILI, MD prescribe most often?
Based on 2023 Medicare Part D data, BARZIN KHALILI, MD's most frequently prescribed drugs include Montelukast Sodium, Symbicort, Azelastine Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does BARZIN KHALILI, MD accept Medicare?
BARZIN KHALILI, MD appears in CMS Medicare data with 589 Part D claims and 110 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify BARZIN KHALILI, MD's credentials?
BARZIN KHALILI, MD's NPI is 1487725990 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.
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