2026 NPPES data Allergy & Immunology Physician NPI 1912311150 M.D.
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AUGUST JILLIAN GENEROSO, M.D.

Allergy & Immunology Physician in EVERETT, Washington. 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
545
Medicare Part D claims · 134 beneficiaries · Allergy & Immunology Physician avg: 764
Generic prescribing
64%
generic claims · 36% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: AUGUST JILLIAN GENEROSO, M.D. is a Allergy & Immunology Physician ([object Object]) practicing in EVERETT, Washington with a Medicare Part D prescribing footprint of 545 claims across 134 beneficiaries — 36% brand-name prescribing .

What stands out: AUGUST JILLIAN GENEROSO, M.D. filed 545 Medicare Part D claims in 2023 across EVERETT, Washington. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

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

AUGUST JILLIAN GENEROSO, M.D. at a glance

Quality data not reported

NPI registry status

Active

Issued 06/16/2014

NPI 1912311150

Primary specialty

Allergy & Immunology Physician

Niche

3,390 US NPIs in this specialty

Medicare Part D claims

545 29% vs specialty avg

2023 prescription claims

Specialty avg: 764

Specialty distribution in Washington

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

Washington providers

Allergy & Immunology Physician share within Washington

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

Specialty board-certification context

Estimated specialty board-certified rate — Allergy & Immunology Physician (ABMS / AOA reference)

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

Est. board-certified rate (Allergy & Immunology Physician) — ABMS / AOA estimate

0%100%78%
Est. board-certified rate (Allergy & Immunology 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).

AUGUST JILLIAN GENEROSO, M.D. is a Allergy & Immunology Physician provider practicing in EVERETT, Washington, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: M.D.. NPI: 1912311150. 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.

AUGUST JILLIAN GENEROSO, M.D. appears in the CMS NPPES registry as a Allergy & Immunology Physician provider holding M.D. credentials at 3901 HOYT AVE, EVERETT, WA, 98201, with a listed phone of (425) 339-5412. NPI 1912311150 was issued on 06/16/2014. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what GENEROSO 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 545 prescription claims written by this provider, covering 134 Medicare beneficiaries and totaling roughly $253K in drug spend, split 36% brand-name and 64% 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.

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

3901 HOYT AVE
EVERETT, WA 98201

Provider Details

NPI 1912311150
Specialty Allergy & Immunology Physician
Credentials M.D.
Gender Male
NPI Issued 06/16/2014

Hospital and facility affiliations

Facilities where AUGUST JILLIAN GENEROSO, 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.

OPTUM CARE WASHINGTON PLLC
EVERETT, WA

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

License & disciplinary context — Washington WMC 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 ~34K Washington medical licensees in 2023 — they are NOT specific to AUGUST JILLIAN GENEROSO, M.D.. To verify AUGUST JILLIAN GENEROSO, M.D.'s current license status, search the WMC public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

88
Total board actions, Washington 2023
Across 85 cases
2.59
Actions per 1,000 licensees
Washington statewide rate
probation
Most common action type
31 cases

WMC 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 Washington disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Above average

AUGUST JILLIAN GENEROSO, M.D. — brand share 36.0%
Specialty average (est.)

36% brand-name claims vs 64% generic, on 545 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.

545
Total Claims
$253K
Total Drug Cost
134
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
723
Total Day Supply
19,670
Brand vs Generic
36% brand / 64% generic
Brand Drug Cost
$241K
Generic Drug Cost
$12K

Patient Demographics

Average Patient Age
70.5 years
Avg HCC Risk Score
1.37
Gender Split
64% female / 36% 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
Azelastine Hcl
90
Fluticasone Propionate
61
Ipratropium Bromide
47
Albuterol Sulfate Hfa
Albuterol Sulfate
37
Advair Hfa
Fluticasone Propion/Salmeterol
29
Breo Ellipta
Fluticasone/Vilanterol
26
Triamcinolone Acetonide
21
Famotidine
20
Omeprazole
19
Prednisone
14

* 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 AUGUST JILLIAN GENEROSO, M.D. 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

AUGUST JILLIAN GENEROSO, M.D.'s 545 claims are below the specialty average of 764.

Nearby Allergy & Immunology Physician Providers in Washington

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

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

Frequently Asked Questions

What is AUGUST JILLIAN GENEROSO, M.D.'s specialty?
AUGUST JILLIAN GENEROSO, M.D. specializes in Allergy & Immunology Physician and practices in EVERETT, Washington. Credentials: M.D..
How much does AUGUST JILLIAN GENEROSO, M.D. prescribe under Medicare Part D?
In 2023, AUGUST JILLIAN GENEROSO, M.D. wrote 545 Medicare Part D claims totaling $253K in drug costs for 134 beneficiaries.
Where is AUGUST JILLIAN GENEROSO, M.D. located?
AUGUST JILLIAN GENEROSO, M.D. is located at 3901 HOYT AVE, EVERETT, WA, 98201. Phone: (425) 339-5412.
What is AUGUST JILLIAN GENEROSO, M.D.'s NPI number?
AUGUST JILLIAN GENEROSO, M.D.'s National Provider Identifier (NPI) is 1912311150, issued on 06/16/2014.
Does AUGUST JILLIAN GENEROSO, M.D. prescribe more brand-name or generic drugs?
AUGUST JILLIAN GENEROSO, M.D.'s prescribing is 36% brand-name and 64% generic drugs by claim count, with $241K 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 AUGUST JILLIAN GENEROSO, M.D. prescribe most often?
Based on 2023 Medicare Part D data, AUGUST JILLIAN GENEROSO, M.D.'s most frequently prescribed drugs include Azelastine Hcl, Fluticasone Propionate, Ipratropium Bromide. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does AUGUST JILLIAN GENEROSO, M.D. accept Medicare?
AUGUST JILLIAN GENEROSO, M.D. appears in CMS Medicare data with 545 Part D claims and 134 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify AUGUST JILLIAN GENEROSO, M.D.'s credentials?
AUGUST JILLIAN GENEROSO, M.D.'s NPI is 1912311150 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.
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