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2026 NPPES data Pain Medicine (Anesthesiology) Physician NPI 1447499199 M.D.
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Insun Lee, M.D.

Pain Medicine (Anesthesiology) Physician in San Diego, California.

This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 4,032 in Pain Medicine (Anesthesiology) Physician, and covers specialty classification, practice address, and Medicare Part D prescribing data when reported. According to CMS, every field reflects the provider's official federal registration, see our methodology.

Federal data, no proprietary rating. We show these CMS records as-is - no composite score, no star rating, no editorial opinion layered on top.
Prescribing volume
888
Medicare Part D claims · 259 beneficiaries · Pain Medicine (Anesthesiology) Physician avg: 2K
Generic prescribing
94%
generic claims · 6% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
20.9/100
▼ 63 pts below national avg 83.5 · Below average
Industry payments
$370.61
12 payments · CMS Open Payments (Sunshine Act)
Verify NPI on CMS Methodology
Compiled from official public sources by the editorial process.

What the federal data shows

Insun Lee, M.D. reported a CMS MIPS final score of 20.9/100 - below the 83.5 national average - and filed 888 Medicare Part D claims in 2023.

20.9/100
MIPS score · -63 vs avg
888
Part D claims, 2023
94%
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.

CMS NPPES provider registry desk

NPI 1447499199 · Pain Medicine (Anesthesiology) Physician

NPI-10 · ENUM-MID · TAX-NARROW · MIPS-LOW · RX-LIGHT · BOOK-THIN · PHOTO-FINISH

  • NPI-10 1447499199
  • ENUM-MID 2009
  • TAX-NARROW 4,032
  • MIPS-LOW 20.9/100
  • RX-LIGHT 888
  • BOOK-THIN 414 in California
  • PHOTO-FINISH Randall Franiak · ±1.7

MIPS final-score neighbourhood

Same-specialty nationwide peers by CMS final score, not geographic proximity

MIPS pts

What this shows Nearest measured MIPS peers for this NUCC specialty (2023 performance year).

Source CMS Quality Payment Program (MIPS) As of 2023

Insun Lee, M.D.'s MIPS score vs every measured U.S. clinician

CMS Merit-based Incentive Payment System (MIPS) final score, 2023, the federal quality measure. Clinicians whose score CMS assigned without scoring any category are excluded.

21 ≥ 3rd percentile 3% of 454,083 measured providers are in lower value bands

0–10: 8,684 measured providers (2%). Below this entry. 10–20: 3,008 measured providers (1%). Below this entry. 20–30: 3,069 measured providers (1%). This entry sits in this band. 30–40: 2,746 measured providers (1%). Above this entry. 40–50: 2,928 measured providers (1%). Above this entry. 50–60: 5,882 measured providers (1%). Above this entry. 60–70: 13,906 measured providers (3%). Above this entry. 70–80: 94,570 measured providers (21%). Above this entry. 80–90: 129,887 measured providers (29%). Above this entry. 90+: 189,403 measured providers (42%). Above this entry. This provider 0 100 every measured MIPS clinician, bucketed by value

Each bar is a band; taller bars hold more measured 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.

The percentile is a conservative whole-score-point band: it counts only measured clinicians in lower score bands. A CMS MIPS metric is not a recommendation or a clinical-quality rating by PlainDoctor. See methodology § corpus placement.

Source CMS Merit-based Incentive Payment System (MIPS) · 2023

Where Insun Lee, M.D. sits

This provider among pain medicine (anesthesiology) physician peers

Across the 928 pain medicine (anesthesiology) physician providers who report both Medicare Part D prescribing and a MIPS quality score, Insun Lee, M.D. writes more Part D claims than 47% of them and scores higher on MIPS quality than 12% - placing this provider in the lower-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality0255075100024.148.372.496.6Part D claim volume, percentile in specialtyMIPS quality, percentilePoint, Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 28Point, Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 45Point, Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 70Point, Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 20Point, Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 18Point, Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 63Point, Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 22Point, Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 43Point, Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 38Point, Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 32Point, Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 47Point, Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 82Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 62Point, Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 57Point, Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 23Point, Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 25Point, Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 48Point, Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 80Point, Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 58Point, Part D claim volume, percentile in specialty: 28 · MIPS quality, percentile: 87Point, Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 60Point, Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 33Point, Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 37Point, Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 77Point, Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 68Point, Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 40Point, Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 50Point, Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 78Point, Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 15Point, Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 17Point, Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 27Point, Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 83Point, Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 52Point, Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 35Point, Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 55Point, Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 30Point, Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 72Point, Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 73Point, Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 53Point, Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 67Point, Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 88Point, Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 92Point, Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 42Point, Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 65Point, Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 0Point, Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 85Point, Part D claim volume, percentile in specialty: 80 · MIPS quality, percentile: 90Insun Lee, M.D., Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 12
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one pain medicine (anesthesiology) physician peer from a representative sample of 60; the gold marker is Insun Lee, M.D.. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

✓
Board certification likely (heuristic, not verified)

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

Below national average

NPI registry status

Active

Issued 02/19/2009

NPI 1447499199

Primary specialty

Pain Medicine (Anesthesiology) Physician

Niche

4,032 US NPIs in this specialty

Medicare Part D claims

888 46% vs specialty avg

2023 prescription claims

Specialty avg: 1,657

MIPS final score

20.9/100 62.6 pts vs avg

Below average band

vs 83.5 national avg

Specialty distribution in California

How Pain Medicine (Anesthesiology) Physician compares to other specialties among California providers

California providers
Behavior Technician17.3%Marriage & Family Therapist5.5%Student in an Organized Heal…5%Mental Health Counselor3.9%Pharmacist3.5%Clinical Social Worker3.1%Pain Medicine (Anesthesiolog…0%
Largest specialties in California (% of in-state providers)

Medicare quality performance, MIPS

Insun Lee, M.D.'s 2023 MIPS final score plotted against the Pain Medicine (Anesthesiology) Physician national average

Below national average
MIPS Final Score
20.9/100
vs 83.5 national avg · 2023 performance year
0%100%National avg84%20.9%
MIPS final score (Pain Medicine (Anesthesiology) Physician) - 20.9/100 vs national avg 83.5
How MIPS and board certification work

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).

Practice Address

5395 RUFFIN RD STE 204
San Diego, CA 92123
(858) 571-3630

Provider Details

NPI 1447499199
Specialty Pain Medicine (Anesthesiology) Physician
Credentials M.D.
Gender Female
NPI Issued 02/19/2009

CMS Quality Score (MIPS)

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

20.9383
Final Score
Measured-score avg: 83.5
25
Quality

Reporting: Individual

Hospital and facility affiliations

Facilities where Insun Lee, 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.

Paul E Kim MD Inc
San Diego, 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).

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 Insun Lee, M.D.. Source: openpaymentsdata.cms.gov.

Total received

$371

Largest payer

Boston Scientific Corporation

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 - 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 Insun Lee, M.D.. To verify Insun Lee, M.D.'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 · Generic-heavy

Insun Lee, M.D. - brand share 6.0%
Pain Medicine (Anesthesiology) Physician average

6% brand-name claims vs 94% generic, on 888 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.

888
Total Claims
$83K
Total Drug Cost
259
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
955
Total Day Supply
26,894
Brand vs Generic
6% brand / 94% generic
Brand Drug Cost
$23K
Generic Drug Cost
$59K
Opioid Claims
461 (51.9% rate)

Patient Demographics

Average Patient Age
65.7 years
Avg HCC Risk Score
1.58
Gender Split
64% female / 36% male
Age Distribution
<65: 90, 65-74: 134, 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 Insun Lee, 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
169
Gabapentin
 116
Oxycodone-Acetaminophen
Oxycodone Hcl/Acetaminophen
78
Oxycodone Hcl
 67
Tizanidine Hcl
 51
Cyclobenzaprine Hcl
 44
Pregabalin
 42
Morphine Sulfate Er
Morphine Sulfate
41
Buprenorphine
 28
Tramadol Hcl
 25

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

More Pain Medicine (Anesthesiology) Physician in CA → All providers in California → Compare specialties →

Pain Medicine (Anesthesiology) Physician Overview

How Insun Lee, M.D. fits within the Pain Medicine (Anesthesiology) Physician landscape nationally.

4,032
Pain Medicine (Anesthesiology) Physician Providers in US
53
States with Pain Medicine (Anesthesiology) Physician
1,657
Avg Claims per Provider

Insun Lee, M.D.'s 888 claims are below the specialty average of 1,657.

Nationwide Pain Medicine (Anesthesiology) Physician peers with similar MIPS or enrollment year

Two federal-record peer sets for Lee, both outside California so the neighborhoods are not geographic containment.

Similar MIPS final score

Nearest same-specialty clinicians by CMS MIPS final score (20.9 here).

Randall Franiak 19.2 IN Stephen Schmidt 23.2 MO Thomas Kraus 23.3 AL Joseph Gillespie 18 LA

Same NPPES enumeration year (2009)

Same-specialty clinicians who entered the NPI registry in the same calendar year, outside this state.

Elliot Palmer Vancouver, WA Christian Piccolo Yorktown Heights, NY Barbara Schooley Nashville, TN Basem Abdelfattah Dallas, TX

Nearby Pain Medicine (Anesthesiology) Physician Providers in California

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

One of 414 Pain Medicine (Anesthesiology) Physician providers enrolled in California, 5 are shown here.

Dr. Shahram Abbassi
MD
Arcata, CA
Dr. Chris Abrecht
M.D.
San Francisco, CA
Dr. Rishi Agarwal
M.D.
Pasadena, CA
Dr. Bashar Ahmed
M.D.
Santa Rosa, CA
Dr. Jane Ahn
M.D.
Stanford, CA

Compare Pain Medicine (Anesthesiology) Physician nationally: see state-by-state distribution →

Frequently Asked Questions

What is Insun Lee, M.D.'s specialty? ▼
Insun Lee, M.D. specializes in Pain Medicine (Anesthesiology) Physician and practices in San Diego, California. Credentials: M.D..
How much does Insun Lee, M.D. prescribe under Medicare Part D? ▼
In 2023, Insun Lee, M.D. wrote 888 Medicare Part D claims totaling $83K in drug costs for 259 beneficiaries.
What is Insun Lee, M.D.'s Medicare quality score? ▼
Insun Lee, M.D. has a CMS MIPS Final Score of 20.9/100 (Quality: 25). The average MIPS Final Score across the 454,083 clinicians with at least one published category score is 83.5; clinicians whose score CMS assigned without scoring any category are excluded from that average. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Insun Lee, M.D. located? ▼
Insun Lee, M.D. is located at 5395 RUFFIN RD STE 204, San Diego, CA, 92123. Phone: (858) 571-3630.
What is Insun Lee, M.D.'s NPI number? ▼
Insun Lee, M.D.'s National Provider Identifier (NPI) is 1447499199, issued on 02/19/2009.
Does Insun Lee, M.D. prescribe more brand-name or generic drugs? ▼
Insun Lee, M.D.'s prescribing is 6% brand-name and 94% generic drugs by claim count, with $23K in brand drug costs.
Does Insun Lee, M.D. prescribe opioids? ▼
Yes, Insun Lee, M.D. had 461 opioid claims in 2023 with an opioid prescribing rate of 51.9%.
How many Pain Medicine (Anesthesiology) Physician providers are there in the US? ▼
There are 4,032 Pain Medicine (Anesthesiology) Physician providers across 53 states in the US. The average Pain Medicine (Anesthesiology) Physician provider writes 1,657 Medicare Part D claims per year.
What drugs does Insun Lee, M.D. prescribe most often? ▼
Based on 2023 Medicare Part D data, Insun Lee, M.D.'s most frequently prescribed drugs include Hydrocodone-Acetaminophen, Gabapentin, Oxycodone-Acetaminophen. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Insun Lee, M.D. accept Medicare? ▼
Insun Lee, M.D. appears in CMS Medicare data with 888 Part D claims and 259 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Insun Lee, M.D.'s credentials? ▼
Insun Lee, M.D.'s NPI is 1447499199 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

View source datasets and methodology notes
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

Compiled from official public sources by the editorial process.

Every figure on PlainDoctor is rendered directly from the federal CMS NPPES registry, Medicare Part D, MIPS, and Open Payments records, no number is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.