2026 NPPES data Interventional Cardiology Physician NPI 1821165705 MD
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MICHAEL PHAN, MD

Interventional Cardiology Physician in HARBOR CITY, 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
2K
Medicare Part D claims · 416 beneficiaries · Interventional Cardiology Physician avg: 3K
Generic prescribing
74%
generic claims · 26% brand-name · higher generic rates reduce patient out-of-pocket costs

What the federal data shows

MICHAEL PHAN, MD filed 1,671 Medicare Part D claims in 2023 as a Interventional Cardiology Physician in HARBOR CITY, California, prescribing 74% generic.

2K
Part D claims, 2023
74%
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.

MICHAEL PHAN, MD's Medicare Part D volume vs every U.S. prescriber

Total Medicare Part D claims, 2023 — across all CMS prescribers nationally

1,671 Top 18% higher than 82% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). Below this entry. 400–600: 90,619 prescribers (7%). Below this entry. 600–800: 56,224 prescribers (4%). Below this entry. 800–1,000: 40,919 prescribers (3%). Below this entry. 1,000–1,200: 31,827 prescribers (2%). Below this entry. 1,200–1,400: 26,224 prescribers (2%). Below this entry. 1,400–1,600: 21,710 prescribers (2%). Below this entry. 1,600–1,800: 19,072 prescribers (1%). This entry sits in this band. 1,800–2,000: 16,451 prescribers (1%). Above this entry. 2,000–2,200: 213,991 prescribers (16%). Above this entry. This provider 0 2K+ every Part D prescriber (claims/yr), bucketed by value

Each bar is a band; taller bars hold more prescribers. 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 Medicare Part D Prescriber Public Use File · 2023

Board certification likely (heuristic — not verified)

MICHAEL PHAN, 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).

What does the federal data show about MICHAEL PHAN, MD?

Quality data not reported

NPI registry status

Active

Issued 11/29/2006

NPI 1821165705

Primary specialty

Interventional Cardiology Physician

Niche

3,382 US NPIs in this specialty

Medicare Part D claims

1,671 44% vs specialty avg

2023 prescription claims

Specialty avg: 2,984

Specialty distribution in California

How Interventional Cardiology Physician compares to other specialties among California providers

California providers

Interventional Cardiology Physician share within California

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

Specialty board-certification context

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

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

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

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

MICHAEL PHAN, MD is a Interventional Cardiology Physician provider practicing in HARBOR CITY, California, according to the CMS National Plan and Provider Enumeration System (NPPES). Credentials: MD. NPI: 1821165705. 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.

MICHAEL PHAN, MD appears in the CMS NPPES registry as a Interventional Cardiology Physician provider holding MD credentials at 25825 VERMONT AVE, HARBOR CITY, CA, 90710, with a listed phone of (310) 325-5111. NPI 1821165705 was issued on 11/29/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what PHAN 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 1,671 prescription claims written by this provider, covering 416 Medicare beneficiaries and totaling roughly $756K in drug spend, split 26% brand-name and 74% generic by claim count, with an opioid prescribing rate of 1.3%. 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.

Interventional Cardiology Physician is a narrow specialty nationwide, with 3,382 enrolled providers across 53 states and an average of 2,984 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

25825 VERMONT AVE
HARBOR CITY, CA 90710

Provider Details

NPI 1821165705
Specialty Interventional Cardiology Physician
Credentials MD
Gender Male
NPI Issued 11/29/2006

Hospital and facility affiliations

Facilities where MICHAEL PHAN, 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.

SOUTHERN CALIFORNIA PERMANENTE MEDICAL GROUP
HARBOR CITY, 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 MICHAEL PHAN, MD. To verify MICHAEL PHAN, 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

MICHAEL PHAN, MD — brand share 26.0%
Specialty average (est.)

26% brand-name claims vs 74% generic, on 1,671 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.

1,671
Total Claims
$756K
Total Drug Cost
416
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
4,536
Total Day Supply
134,437
Brand vs Generic
26% brand / 74% generic
Brand Drug Cost
$730K
Generic Drug Cost
$26K
Opioid Claims
22 (1.3% rate)
Antibiotic Claims
31

Patient Demographics

Average Patient Age
77.0 years
Avg HCC Risk Score
1.75
Gender Split
39% female / 61% male
Age Distribution
<65: 17, 65-74: 143, 75-84: 181, 85+: 75

Top Prescribed Drugs (Medicare Part D)

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

Drug Claims
Pradaxa
Dabigatran Etexilate Mesylate
122
Eliquis
Apixaban
105
Atorvastatin Calcium
99
Metoprolol Tartrate
91
Carvedilol
85
Flecainide Acetate
77
Bisoprolol Fumarate
72
Jardiance
Empagliflozin
72
Nitroglycerin
67
Amiodarone Hcl
63

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

Interventional Cardiology Physician Overview

How MICHAEL PHAN, MD fits within the Interventional Cardiology Physician landscape nationally.

3,382
Interventional Cardiology Physician Providers in US
53
States with Interventional Cardiology Physician
2,984
Avg Claims per Provider

MICHAEL PHAN, MD's 1,671 claims are below the specialty average of 2,984.

Nearby Interventional Cardiology Physician Providers in California

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

Compare Interventional Cardiology Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MICHAEL PHAN, MD's specialty?
MICHAEL PHAN, MD specializes in Interventional Cardiology Physician and practices in HARBOR CITY, California. Credentials: MD.
How much does MICHAEL PHAN, MD prescribe under Medicare Part D?
In 2023, MICHAEL PHAN, MD wrote 1,671 Medicare Part D claims totaling $756K in drug costs for 416 beneficiaries.
Where is MICHAEL PHAN, MD located?
MICHAEL PHAN, MD is located at 25825 VERMONT AVE, HARBOR CITY, CA, 90710. Phone: (310) 325-5111.
What is MICHAEL PHAN, MD's NPI number?
MICHAEL PHAN, MD's National Provider Identifier (NPI) is 1821165705, issued on 11/29/2006.
Does MICHAEL PHAN, MD prescribe more brand-name or generic drugs?
MICHAEL PHAN, MD's prescribing is 26% brand-name and 74% generic drugs by claim count, with $730K in brand drug costs.
Does MICHAEL PHAN, MD prescribe opioids?
Yes, MICHAEL PHAN, MD had 22 opioid claims in 2023 with an opioid prescribing rate of 1.3%.
How many Interventional Cardiology Physician providers are there in the US?
There are 3,382 Interventional Cardiology Physician providers across 53 states in the US. The average Interventional Cardiology Physician provider writes 2,984 Medicare Part D claims per year.
What drugs does MICHAEL PHAN, MD prescribe most often?
Based on 2023 Medicare Part D data, MICHAEL PHAN, MD's most frequently prescribed drugs include Pradaxa, Eliquis, Atorvastatin Calcium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does MICHAEL PHAN, MD accept Medicare?
MICHAEL PHAN, MD appears in CMS Medicare data with 1,671 Part D claims and 416 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MICHAEL PHAN, MD's credentials?
MICHAEL PHAN, MD's NPI is 1821165705 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