2026 NPPES data Emergency Medicine Physician NPI 1003027947 MD
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HOI CHAN, MD

Emergency Medicine Physician in TULSA, Oklahoma. 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
396
Medicare Part D claims · 198 beneficiaries · Emergency Medicine Physician avg: 352

What the federal data shows

HOI CHAN, MD filed 396 Medicare Part D claims in 2023 as a Emergency Medicine Physician in TULSA, Oklahoma.

396
Part D claims, 2023

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.

HOI CHAN, MD's Medicare Part D volume vs every U.S. prescriber

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

396 Top 43% higher than 57% of 1,370,886 prescribers

0–200: 670,926 prescribers (49%). Below this entry. 200–400: 182,923 prescribers (13%). This entry sits in this band. 400–600: 90,619 prescribers (7%). Above this entry. 600–800: 56,224 prescribers (4%). Above this entry. 800–1,000: 40,919 prescribers (3%). Above this entry. 1,000–1,200: 31,827 prescribers (2%). Above this entry. 1,200–1,400: 26,224 prescribers (2%). Above this entry. 1,400–1,600: 21,710 prescribers (2%). Above this entry. 1,600–1,800: 19,072 prescribers (1%). Above this entry. 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-eligible specialty (heuristic — not verified)

HOI CHAN, MD practices in an ABMS-board-eligible specialty but we don't have enough CMS-participation signals to confirm active board-certified status. Consult CertificationMatters.org (the official ABMS public lookup).

What does the federal data show about HOI CHAN, MD?

Quality data not reported

NPI registry status

Active

Issued 05/24/2007

NPI 1003027947

Primary specialty

Emergency Medicine Physician

High-volume

64,398 US NPIs in this specialty

Medicare Part D claims

396 13% vs specialty avg

2023 prescription claims

Specialty avg: 352

Specialty distribution in Oklahoma

How Emergency Medicine Physician compares to other specialties among Oklahoma providers

Oklahoma providers

Emergency Medicine Physician share within Oklahoma

1. Emergency Medicine Physician42%2. Internal medicine21%3. Family medicine17%4. Surgical12%5. Pediatric8%
Emergency Medicine Physician share within Oklahoma

Specialty board-certification context

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

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

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

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

HOI CHAN, MD appears in the CMS NPPES registry as a Emergency Medicine Physician provider holding MD credentials at 6161 S YALE AVE, TULSA, OK, 74136, with a listed phone of (918) 494-6161. NPI 1003027947 was issued on 05/24/2007. 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 396 prescription claims written by this provider, covering 198 Medicare beneficiaries and totaling roughly $8K in drug spend, with an opioid prescribing rate of 3.8%. 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.

Emergency Medicine Physician is a high-volume specialty nationwide, with 64,398 enrolled providers across 56 states and an average of 352 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

6161 S YALE AVE
TULSA, OK 74136

Provider Details

NPI 1003027947
Specialty Emergency Medicine Physician
Credentials MD
Gender Female
NPI Issued 05/24/2007

Medicare Part D Prescribing Data

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

396
Total Claims
$8K
Total Drug Cost
198
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
403
Total Day Supply
4,136
Generic Drug Cost
$4K
Opioid Claims
15 (3.8% rate)
Antibiotic Claims
78

Patient Demographics

Average Patient Age
68.2 years
Avg HCC Risk Score
1.43
Gender Split
73% female / 27% male
Age Distribution
<65: 51, 65-74: 91, 75-84: 40, 85+: 16

Top Prescribed Drugs (Medicare Part D)

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

What HOI CHAN, MD 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
Ondansetron Odt
Ondansetron
103
Cyclobenzaprine Hcl
25
Azithromycin
20
Naproxen
18
Dicyclomine Hcl
15
Ciprofloxacin Hcl
13
Acetaminophen-Codeine
Acetaminophen With Codeine
12
Nitrofurantoin Mono-Macro
Nitrofurantoin Monohyd/M-Cryst
12
Prednisone
12
Methylprednisolone
11

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

Emergency Medicine Physician Overview

How HOI CHAN, MD fits within the Emergency Medicine Physician landscape nationally.

64,398
Emergency Medicine Physician Providers in US
56
States with Emergency Medicine Physician
352
Avg Claims per Provider

HOI CHAN, MD's 396 claims are above the specialty average of 352.

Nearby Emergency Medicine Physician Providers in Oklahoma

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

Compare Emergency Medicine Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is HOI CHAN, MD's specialty?
HOI CHAN, MD specializes in Emergency Medicine Physician and practices in TULSA, Oklahoma. Credentials: MD.
How much does HOI CHAN, MD prescribe under Medicare Part D?
In 2023, HOI CHAN, MD wrote 396 Medicare Part D claims totaling $8K in drug costs for 198 beneficiaries.
Where is HOI CHAN, MD located?
HOI CHAN, MD is located at 6161 S YALE AVE, TULSA, OK, 74136. Phone: (918) 494-6161.
What is HOI CHAN, MD's NPI number?
HOI CHAN, MD's National Provider Identifier (NPI) is 1003027947, issued on 05/24/2007.
Does HOI CHAN, MD prescribe opioids?
Yes, HOI CHAN, MD had 15 opioid claims in 2023 with an opioid prescribing rate of 3.8%.
How many Emergency Medicine Physician providers are there in the US?
There are 64,398 Emergency Medicine Physician providers across 56 states in the US. The average Emergency Medicine Physician provider writes 352 Medicare Part D claims per year.
What drugs does HOI CHAN, MD prescribe most often?
Based on 2023 Medicare Part D data, HOI CHAN, MD's most frequently prescribed drugs include Ondansetron Odt, Cyclobenzaprine Hcl, Azithromycin. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does HOI CHAN, MD accept Medicare?
HOI CHAN, MD appears in CMS Medicare data with 396 Part D claims and 198 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify HOI CHAN, MD's credentials?
HOI CHAN, MD's NPI is 1003027947 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