2026 NPPES data Anesthesiology Physician NPI 1316966393 M.D.
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DO CHAN, M.D.

Anesthesiology Physician in ATTLEBORO, Massachusetts. 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
451
Medicare Part D claims · 272 beneficiaries · Anesthesiology Physician avg: 860
Generic prescribing
86%
generic claims · 14% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
96.8145/100
▲ 14 pts above national avg 83.1 · [object Object]
Industry payments
$3.5K
93 payments · CMS Open Payments (Sunshine Act)

What the federal data shows

DO CHAN, M.D. reported a CMS MIPS final score of 96.8145/100 — above the 83.1 national average — and filed 451 Medicare Part D claims in 2023.

96.8145/100
MIPS score · +14 vs avg
451
Part D claims, 2023
86%
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.

DO CHAN, M.D.'s MIPS score vs every scored U.S. clinician

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

97 Top 17% higher than 83% 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)

DO CHAN, M.D. practices in an ABMS-board-eligible specialty and shows active CMS Medicare participation + MIPS quality reporting + 2 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 DO CHAN, M.D.?

High performer (top quartile)

NPI registry status

Active

Issued 07/19/2006

NPI 1316966393

Primary specialty

Anesthesiology Physician

High-volume

56,398 US NPIs in this specialty

Medicare Part D claims

451 48% vs specialty avg

2023 prescription claims

Specialty avg: 860

MIPS final score

96.8145/100 13.714500000000001% pts

Exceptional band

vs 83.1 national avg

Specialty distribution in Massachusetts

How Anesthesiology Physician compares to other specialties among Massachusetts providers

Massachusetts providers

Anesthesiology Physician share within Massachusetts

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

Medicare quality performance — MIPS

DO CHAN, M.D.'s 2023 MIPS final score plotted against the Anesthesiology Physician national average

High performer (top quartile)
MIPS Final Score
96.8145/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Anesthesiology Physician) — 96.8145/100 vs national avg 83.1

0%100%National avg83%96.8%
MIPS final score (Anesthesiology Physician) — 96.8145/100 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).

DO CHAN, M.D. appears in the CMS NPPES registry as a Anesthesiology Physician provider holding M.D. credentials at 211 PARK ST, ATTLEBORO, MA, 02703, with a listed phone of (508) 236-7430. NPI 1316966393 was issued on 07/19/2006. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what CHAN 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 451 prescription claims written by this provider, covering 272 Medicare beneficiaries and totaling roughly $59K in drug spend, split 14% brand-name and 86% generic by claim count, with an opioid prescribing rate of 75.6%. 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 96.8145/100 for the 2023 performance year (Quality 83.6289), compared with the national average of 83.1.

Anesthesiology Physician is a high-volume specialty nationwide, with 56,398 enrolled providers across 56 states and an average of 860 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

211 PARK ST
ATTLEBORO, MA 02703

Provider Details

NPI 1316966393
Specialty Anesthesiology Physician
Credentials M.D.
Gender Male
NPI Issued 07/19/2006

CMS Quality Score (MIPS)

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

96.8145
Final Score
Avg: 83.1
83.6289
Quality

Reporting: Group practice

Hospital and facility affiliations

Facilities where DO CHAN, 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.

FRANKLIN PAIN ASSOCIATES LLC
ATTLEBORO, MA
WARWICK PAIN ASSOCIATES LLC
WARWICK, RI

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 DO CHAN, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$3.5K

Largest payer

SI-BONE, INC.

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 — Massachusetts BORIM 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 ~38K Massachusetts medical licensees in 2023 — they are NOT specific to DO CHAN, M.D.. To verify DO CHAN, M.D.'s current license status, search the BORIM public license lookup directly, or check the Federation of State Medical Boards (FSMB) verification service.

80
Total board actions, Massachusetts 2023
Across 78 cases
2.11
Actions per 1,000 licensees
Massachusetts statewide rate
probation
Most common action type
29 cases

BORIM 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 Massachusetts disciplinary trends page. Cross-checked against FSMB U.S. Medical Regulatory Trends.

Brand vs generic prescribing mix · Typical

DO CHAN, M.D. — brand share 14.0%
Specialty average (est.)

14% brand-name claims vs 86% generic, on 451 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.

451
Total Claims
$59K
Total Drug Cost
272
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
457
Total Day Supply
12,687
Brand vs Generic
14% brand / 86% generic
Brand Drug Cost
$43K
Generic Drug Cost
$16K
Opioid Claims
341 (75.6% rate)

Patient Demographics

Average Patient Age
66.5 years
Avg HCC Risk Score
1.57
Gender Split
54% female / 46% male
Age Distribution
<65: 108, 65-74: 101, 75-84: N/A, 85+: N/A

Top Prescribed Drugs (Medicare Part D)

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

What DO CHAN, M.D. prescribes most

Top Medicare Part D drugs by claim count, 2023

claims
Source CMS Medicare Part D Prescriber Public Use File As of 2023
Drug Claims
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
85
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
68
Oxycodone Hcl
67
Gabapentin
25
Buprenorphine
21
Belbuca
Buprenorphine Hcl
20
Pregabalin
19
Morphine Sulfate Er
Morphine Sulfate
18
Tramadol Hcl
16

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

Anesthesiology Physician Overview

How DO CHAN, M.D. fits within the Anesthesiology Physician landscape nationally.

56,398
Anesthesiology Physician Providers in US
56
States with Anesthesiology Physician
860
Avg Claims per Provider

DO CHAN, M.D.'s 451 claims are below the specialty average of 860.

Nearby Anesthesiology Physician Providers in Massachusetts

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

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

Frequently Asked Questions

What is DO CHAN, M.D.'s specialty?
DO CHAN, M.D. specializes in Anesthesiology Physician and practices in ATTLEBORO, Massachusetts. Credentials: M.D..
How much does DO CHAN, M.D. prescribe under Medicare Part D?
In 2023, DO CHAN, M.D. wrote 451 Medicare Part D claims totaling $59K in drug costs for 272 beneficiaries.
What is DO CHAN, M.D.'s Medicare quality score?
DO CHAN, M.D. has a CMS MIPS Final Score of 96.8145/100 (Quality: 83.6289). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is DO CHAN, M.D. located?
DO CHAN, M.D. is located at 211 PARK ST, ATTLEBORO, MA, 02703. Phone: (508) 236-7430.
What is DO CHAN, M.D.'s NPI number?
DO CHAN, M.D.'s National Provider Identifier (NPI) is 1316966393, issued on 07/19/2006.
Does DO CHAN, M.D. prescribe more brand-name or generic drugs?
DO CHAN, M.D.'s prescribing is 14% brand-name and 86% generic drugs by claim count, with $43K in brand drug costs.
Does DO CHAN, M.D. prescribe opioids?
Yes, DO CHAN, M.D. had 341 opioid claims in 2023 with an opioid prescribing rate of 75.6%.
How many Anesthesiology Physician providers are there in the US?
There are 56,398 Anesthesiology Physician providers across 56 states in the US. The average Anesthesiology Physician provider writes 860 Medicare Part D claims per year.
What drugs does DO CHAN, M.D. prescribe most often?
Based on 2023 Medicare Part D data, DO CHAN, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Oxycodone-Acetaminophen, Oxycodone Hcl. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does DO CHAN, M.D. accept Medicare?
DO CHAN, M.D. appears in CMS Medicare data with 451 Part D claims and 272 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify DO CHAN, M.D.'s credentials?
DO CHAN, M.D.'s NPI is 1316966393 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.
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