2026 NPPES data Allergy Physician NPI 1003080052 MD
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JULIA CRONIN, MD

Allergy Physician in MOUNTAIN VIEW, 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
268
Medicare Part D claims · 58 beneficiaries · Allergy Physician avg: 755
Generic prescribing
62%
generic claims · 38% brand-name · higher generic rates reduce patient out-of-pocket costs
Industry payments
$61.58
1 payments · CMS Open Payments (Sunshine Act)
What the federal data reveals: JULIA CRONIN, MD is a Allergy Physician ([object Object]) practicing in MOUNTAIN VIEW, California with a Medicare Part D prescribing footprint of 268 claims across 58 beneficiaries — 38% brand-name prescribing . Industry payments of $61.58 across 1 transactions are disclosed under CMS Open Payments (Sunshine Act).

What stands out: JULIA CRONIN, MD filed 268 Medicare Part D claims in 2023 across MOUNTAIN VIEW, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

JULIA CRONIN, MD 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).

JULIA CRONIN, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 04/21/2008

NPI 1003080052

Primary specialty

Allergy Physician

Niche

1,019 US NPIs in this specialty

Medicare Part D claims

268 65% vs specialty avg

2023 prescription claims

Specialty avg: 755

Specialty distribution in California

How Allergy Physician compares to other specialties among California providers

California providers

Allergy Physician share within California

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

Specialty board-certification context

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

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

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

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

JULIA CRONIN, MD is a Allergy Physician provider practicing in MOUNTAIN VIEW, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1003080052. 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.

JULIA CRONIN, MD appears in the CMS NPPES registry as a Allergy Physician provider holding MD credentials at 701 E EL CAMINO REAL, MOUNTAIN VIEW, CA, 94040, with a listed phone of (650) 934-7888. NPI 1003080052 was issued on 04/21/2008. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CRONIN 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 268 prescription claims written by this provider, covering 58 Medicare beneficiaries and totaling roughly $136K in drug spend, split 38% brand-name and 62% 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 Physician is a narrow specialty nationwide, with 1,019 enrolled providers across 49 states and an average of 755 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

701 E EL CAMINO REAL
MOUNTAIN VIEW, CA 94040

Provider Details

NPI 1003080052
Specialty Allergy Physician
Credentials MD
Gender Female
NPI Issued 04/21/2008

Hospital and facility affiliations

Facilities where JULIA CRONIN, 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.

SUTTER BAY MEDICAL FOUNDATION
LOS GATOS, 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 JULIA CRONIN, MD. Source: openpaymentsdata.cms.gov.

Total received

$62

Largest payer

Blueprint Medicines Corporation

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 JULIA CRONIN, MD. To verify JULIA CRONIN, 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.

Brand vs generic prescribing mix · Above average

JULIA CRONIN, MD — brand share 38.0%
Specialty average (est.)

38% brand-name claims vs 62% generic, on 268 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.

268
Total Claims
$136K
Total Drug Cost
58
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
462
Total Day Supply
13,108
Brand vs Generic
38% brand / 62% generic
Brand Drug Cost
$119K
Generic Drug Cost
$17K

Patient Demographics

Average Patient Age
73.7 years
Avg HCC Risk Score
1.00
Gender Split
78% female / 22% 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
43
Azelastine Hcl
39
Albuterol Sulfate Hfa
Albuterol Sulfate
29
Dulera
Mometasone/Formoterol
19
Dupixent Pen
Dupilumab
15
Breo Ellipta
Fluticasone/Vilanterol
13
Alvesco
Ciclesonide
12
Mometasone Furoate
12

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

Allergy Physician Overview

How JULIA CRONIN, MD fits within the Allergy Physician landscape nationally.

1,019
Allergy Physician Providers in US
49
States with Allergy Physician
755
Avg Claims per Provider

JULIA CRONIN, MD's 268 claims are below the specialty average of 755.

Nearby Allergy Physician Providers in California

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

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

Frequently Asked Questions

What is JULIA CRONIN, MD's specialty?
JULIA CRONIN, MD specializes in Allergy Physician and practices in MOUNTAIN VIEW, California. Credentials: MD.
How much does JULIA CRONIN, MD prescribe under Medicare Part D?
In 2023, JULIA CRONIN, MD wrote 268 Medicare Part D claims totaling $136K in drug costs for 58 beneficiaries.
Where is JULIA CRONIN, MD located?
JULIA CRONIN, MD is located at 701 E EL CAMINO REAL, MOUNTAIN VIEW, CA, 94040. Phone: (650) 934-7888.
What is JULIA CRONIN, MD's NPI number?
JULIA CRONIN, MD's National Provider Identifier (NPI) is 1003080052, issued on 04/21/2008.
Does JULIA CRONIN, MD prescribe more brand-name or generic drugs?
JULIA CRONIN, MD's prescribing is 38% brand-name and 62% generic drugs by claim count, with $119K in brand drug costs.
How many Allergy Physician providers are there in the US?
There are 1,019 Allergy Physician providers across 49 states in the US. The average Allergy Physician provider writes 755 Medicare Part D claims per year.
What drugs does JULIA CRONIN, MD prescribe most often?
Based on 2023 Medicare Part D data, JULIA CRONIN, MD's most frequently prescribed drugs include Montelukast Sodium, Azelastine Hcl, Albuterol Sulfate Hfa. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does JULIA CRONIN, MD accept Medicare?
JULIA CRONIN, MD appears in CMS Medicare data with 268 Part D claims and 58 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify JULIA CRONIN, MD's credentials?
JULIA CRONIN, MD's NPI is 1003080052 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