2026 NPPES data Allergy Physician NPI 1811906571 MD
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DEAN KARDASSAKIS, MD

Allergy Physician in SAN FRANCISCO, 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
535
Medicare Part D claims · 105 beneficiaries · Allergy Physician avg: 755
Generic prescribing
48%
generic claims · 52% brand-name · higher generic rates reduce patient out-of-pocket costs
What the federal data reveals: DEAN KARDASSAKIS, MD is a Allergy Physician ([object Object]) practicing in SAN FRANCISCO, California with a Medicare Part D prescribing footprint of 535 claims across 105 beneficiaries — 52% brand-name prescribing .

What stands out: DEAN KARDASSAKIS, MD filed 535 Medicare Part D claims in 2023 across SAN FRANCISCO, California. Every figure on this page comes straight from federal CMS records, with no proprietary rating applied.

Board certification likely (heuristic — not verified)

DEAN KARDASSAKIS, MD practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + 2 hospital affiliations — signals consistent with board-certified status. For verified board certification, see CertificationMatters.org (the official ABMS public lookup).

DEAN KARDASSAKIS, MD at a glance

Quality data not reported

NPI registry status

Active

Issued 08/05/2006

NPI 1811906571

Primary specialty

Allergy Physician

Niche

1,019 US NPIs in this specialty

Medicare Part D claims

535 29% 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).

DEAN KARDASSAKIS, MD is a Allergy Physician provider practicing in SAN FRANCISCO, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1811906571. 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.

DEAN KARDASSAKIS, MD appears in the CMS NPPES registry as a Allergy Physician provider holding MD credentials at 450 SUTTER ST RM 933, SAN FRANCISCO, CA, 94108, with a listed phone of (415) 362-5443. NPI 1811906571 was issued on 08/05/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what KARDASSAKIS 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 535 prescription claims written by this provider, covering 105 Medicare beneficiaries and totaling roughly $240K in drug spend, split 52% brand-name and 48% 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

450 SUTTER ST RM 933
SAN FRANCISCO, CA 94108

Provider Details

NPI 1811906571
Specialty Allergy Physician
Credentials MD
Gender Male
NPI Issued 08/05/2006

Hospital and facility affiliations

Facilities where DEAN KARDASSAKIS, 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.

REGENTS OF THE UNIVERSITY OF CALIFORNIA - UCSF
SAN FRANCISCO, CA
STEVEN MACHTINGER MD AND ASSOCIATES INC
SAN MATEO, 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).

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 DEAN KARDASSAKIS, MD. To verify DEAN KARDASSAKIS, 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 · Brand-heavy

DEAN KARDASSAKIS, MD — brand share 52.0%
Specialty average (est.)

52% brand-name claims vs 48% generic, on 535 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.

535
Total Claims
$240K
Total Drug Cost
105
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
740
Total Day Supply
20,544
Brand vs Generic
52% brand / 48% generic
Brand Drug Cost
$221K
Antibiotic Claims
11

Patient Demographics

Average Patient Age
73.6 years
Avg HCC Risk Score
0.90
Gender Split
66% female / 34% 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
Albuterol Sulfate Hfa
Albuterol Sulfate
65
Ipratropium Bromide
62
Montelukast Sodium
51
Symbicort
Budesonide/Formoterol Fumarate
39
Wixela Inhub
Fluticasone Propion/Salmeterol
34
Azelastine Hcl
26
Flovent Hfa
Fluticasone Propionate
25
Fluticasone Propionate
21
Breo Ellipta
Fluticasone/Vilanterol
20
Nucala
Mepolizumab
18

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

Allergy Physician Overview

How DEAN KARDASSAKIS, 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

DEAN KARDASSAKIS, MD's 535 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 KARDASSAKIS.

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

Frequently Asked Questions

What is DEAN KARDASSAKIS, MD's specialty?
DEAN KARDASSAKIS, MD specializes in Allergy Physician and practices in SAN FRANCISCO, California. Credentials: MD.
How much does DEAN KARDASSAKIS, MD prescribe under Medicare Part D?
In 2023, DEAN KARDASSAKIS, MD wrote 535 Medicare Part D claims totaling $240K in drug costs for 105 beneficiaries.
Where is DEAN KARDASSAKIS, MD located?
DEAN KARDASSAKIS, MD is located at 450 SUTTER ST RM 933, SAN FRANCISCO, CA, 94108. Phone: (415) 362-5443.
What is DEAN KARDASSAKIS, MD's NPI number?
DEAN KARDASSAKIS, MD's National Provider Identifier (NPI) is 1811906571, issued on 08/05/2006.
Does DEAN KARDASSAKIS, MD prescribe more brand-name or generic drugs?
DEAN KARDASSAKIS, MD's prescribing is 52% brand-name and 48% generic drugs by claim count, with $221K 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 DEAN KARDASSAKIS, MD prescribe most often?
Based on 2023 Medicare Part D data, DEAN KARDASSAKIS, MD's most frequently prescribed drugs include Albuterol Sulfate Hfa, Ipratropium Bromide, Montelukast Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DEAN KARDASSAKIS, MD accept Medicare?
DEAN KARDASSAKIS, MD appears in CMS Medicare data with 535 Part D claims and 105 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DEAN KARDASSAKIS, MD's credentials?
DEAN KARDASSAKIS, MD's NPI is 1811906571 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