2026 NPPES data Addiction Medicine (Family Medicine) Physician NPI 1629305479 D.O.
Verify on CMS →

MICHAEL STONE, D.O.

Addiction Medicine (Family Medicine) Physician in NORWALK, 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
103
Medicare Part D claims · 35 beneficiaries · Addiction Medicine (Family Medicine) Physician avg: 1K
MIPS score
100/100
▲ 17 pts above national avg 83.1 · [object Object]

What the federal data shows

MICHAEL STONE, D.O. reported a CMS MIPS final score of 100/100 — above the 83.1 national average — and filed 103 Medicare Part D claims in 2023.

100/100
MIPS score · +17 vs avg
103
Part D claims, 2023
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 STONE, D.O.'s MIPS score vs every scored U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023 — the federal quality measure

100 Top 7% higher than 93% of 477,587 scored providers

0–10: 8,684 scored providers (2%). Below this entry. 10–20: 3,008 scored providers (1%). Below this entry. 20–30: 3,069 scored providers (1%). Below this entry. 30–40: 2,746 scored providers (1%). Below this entry. 40–50: 2,928 scored providers (1%). Below this entry. 50–60: 5,882 scored providers (1%). Below this entry. 60–70: 13,906 scored providers (3%). Below this entry. 70–80: 118,074 scored providers (25%). Below this entry. 80–90: 129,887 scored providers (27%). Below this entry. 90–100: 189,403 scored providers (40%). This entry sits in this band. This provider 0 100 every MIPS-scored clinician, bucketed by value

Each bar is a band; taller bars hold more scored providers. 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 Merit-based Incentive Payment System (MIPS) · 2023

Board certification likely (heuristic — not verified)

MICHAEL STONE, D.O. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 3 hospital affiliations — 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 STONE, D.O.?

High performer (top quartile)

NPI registry status

Active

Issued 11/13/2009

NPI 1629305479

Primary specialty

Addiction Medicine (Family Medicine) Physician

Niche

763 US NPIs in this specialty

Medicare Part D claims

103 91% vs specialty avg

2023 prescription claims

Specialty avg: 1,134

MIPS final score

100/100 16.900000000000006% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in California

How Addiction Medicine (Family Medicine) Physician compares to other specialties among California providers

California providers

Addiction Medicine (Family Medicine) Physician share within California

1. Addiction Medicine (Family Medicine) Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Addiction Medicine (Family Medicine) Physician share within California

Medicare quality performance — MIPS

MICHAEL STONE, D.O.'s 2023 MIPS final score plotted against the Addiction Medicine (Family Medicine) Physician national average

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

MIPS final score (Addiction Medicine (Family Medicine) Physician) — 100/100 vs national avg 83.1

0%100%National avg83%99%
MIPS final score (Addiction Medicine (Family Medicine) Physician) — 100/100 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).

MICHAEL STONE, D.O. appears in the CMS NPPES registry as a Addiction Medicine (Family Medicine) Physician provider holding D.O. credentials at 13100 STUDEBAKER RD, NORWALK, CA, 90650, with a listed phone of (562) 864-6377. NPI 1629305479 was issued on 11/13/2009. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what STONE 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 103 prescription claims written by this provider, covering 35 Medicare beneficiaries and totaling roughly $9K in drug spend. 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 100/100 for the 2023 performance year (Quality 100), compared with the national average of 83.1.

Addiction Medicine (Family Medicine) Physician is a narrow specialty nationwide, with 763 enrolled providers across 48 states and an average of 1,134 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

13100 STUDEBAKER RD
NORWALK, CA 90650

Provider Details

NPI 1629305479
Specialty Addiction Medicine (Family Medicine) Physician
Credentials D.O.
Gender Male
NPI Issued 11/13/2009

CMS Quality Score (MIPS)

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

100
Final Score
Avg: 83.1
100
Quality

Reporting: Group practice

Hospital and facility affiliations

Facilities where MICHAEL STONE, D.O. 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.

CAN EMERGENCY PHYSICIANS MEDICAL GROUP INC
TUSTIN, CA
COAST PLAZA EMERGENCY PHYSICIANS GROUP INC
NORWALK, CA
MEDXCEL GROUP
BURBANK, 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 STONE, D.O.. To verify MICHAEL STONE, D.O.'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.

Medicare Part D Prescribing Data

CMS Medicare Part D prescriber-level data for calendar year 2023.

103
Total Claims
$9K
Total Drug Cost
35
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
104
Total Day Supply
1,827
Generic Drug Cost
$5K
Antibiotic Claims
18

Patient Demographics

Average Patient Age
60.9 years
Avg HCC Risk Score
1.74
Gender Split
49% female / 51% male
Age Distribution
<65: 19, 65-74: N/A, 75-84: N/A, 85+: N/A

Addiction Medicine (Family Medicine) Physician Overview

How MICHAEL STONE, D.O. fits within the Addiction Medicine (Family Medicine) Physician landscape nationally.

763
Addiction Medicine (Family Medicine) Physician Providers in US
48
States with Addiction Medicine (Family Medicine) Physician
1,134
Avg Claims per Provider

MICHAEL STONE, D.O.'s 103 claims are below the specialty average of 1,134.

Nearby Addiction Medicine (Family Medicine) Physician Providers in California

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

Compare Addiction Medicine (Family Medicine) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is MICHAEL STONE, D.O.'s specialty?
MICHAEL STONE, D.O. specializes in Addiction Medicine (Family Medicine) Physician and practices in NORWALK, California. Credentials: D.O..
How much does MICHAEL STONE, D.O. prescribe under Medicare Part D?
In 2023, MICHAEL STONE, D.O. wrote 103 Medicare Part D claims totaling $9K in drug costs for 35 beneficiaries.
What is MICHAEL STONE, D.O.'s Medicare quality score?
MICHAEL STONE, D.O. has a CMS MIPS Final Score of 100/100 (Quality: 100). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is MICHAEL STONE, D.O. located?
MICHAEL STONE, D.O. is located at 13100 STUDEBAKER RD, NORWALK, CA, 90650. Phone: (562) 864-6377.
What is MICHAEL STONE, D.O.'s NPI number?
MICHAEL STONE, D.O.'s National Provider Identifier (NPI) is 1629305479, issued on 11/13/2009.
How many Addiction Medicine (Family Medicine) Physician providers are there in the US?
There are 763 Addiction Medicine (Family Medicine) Physician providers across 48 states in the US. The average Addiction Medicine (Family Medicine) Physician provider writes 1,134 Medicare Part D claims per year.
Does MICHAEL STONE, D.O. accept Medicare?
MICHAEL STONE, D.O. appears in CMS Medicare data with 103 Part D claims and 35 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify MICHAEL STONE, D.O.'s credentials?
MICHAEL STONE, D.O.'s NPI is 1629305479 with credentials D.O.. 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