2026 NPPES data Family Medicine Physician NPI 1245359132 MD
Verify on CMS →

Brian Lum, MD

Family Medicine Physician in Greenville, South Carolina. This profile is drawn from the federal National Provider Identifier Registry (CMS NPPES), which lists more than 7 million U.S. healthcare providers - including 147,640 in Family Medicine 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
6K
Medicare Part D claims · 724 beneficiaries · Family Medicine Physician avg: 3K
Generic prescribing
90%
generic claims · 8% brand-name · higher generic rates reduce patient out-of-pocket costs
MIPS score
80.1/100
▼ 3 pts below national avg 83.1 · Above neutral
Industry payments
$33.46
1 payments · CMS Open Payments (Sunshine Act)
Compiled from official public sources by the PlainDoctor editorial team.

What the federal data shows

Brian Lum, MD reported a CMS MIPS final score of 80.1/100 - below the 83.1 national average - and filed 5,503 Medicare Part D claims in 2023.

80.1/100
MIPS score · -3 vs avg
6K
Part D claims, 2023
90%
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.

Brian Lum, MD's MIPS score vs every scored U.S. clinician

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

80 33rd percentile higher than 33% 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%). This entry sits in this band. 90+: 189,403 scored providers (40%). Above this entry. 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

Where Brian Lum, MD sits

This provider among family medicine physician peers

Across the 22,040 family medicine physician providers who report both Medicare Part D prescribing and a MIPS quality score, Brian Lum, MD writes more Part D claims than 69% of them and scores higher on MIPS quality than 31% - placing this provider in the high-volume, lower-quality quadrant. Volume reflects patient-panel size and specialty, not quality; the two axes are independent.

Part D claim volume vs MIPS quality, by specialty percentile

Lower volume · High qualityHigh volume · High qualityLower volume · Lower qualityHigh volume · Lower quality02550751000255075100Part D claim volume, percentile in specialtyMIPS quality, percentilePart D claim volume, percentile in specialty: 92 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 67 · MIPS quality, percentile: 47Part D claim volume, percentile in specialty: 17 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 63 · MIPS quality, percentile: 60Part D claim volume, percentile in specialty: 43 · MIPS quality, percentile: 77Part D claim volume, percentile in specialty: 22 · MIPS quality, percentile: 37Part D claim volume, percentile in specialty: 3 · MIPS quality, percentile: 80Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 90Part D claim volume, percentile in specialty: 5 · MIPS quality, percentile: 38Part D claim volume, percentile in specialty: 7 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 68 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 62 · MIPS quality, percentile: 58Part D claim volume, percentile in specialty: 32 · MIPS quality, percentile: 42Part D claim volume, percentile in specialty: 20 · MIPS quality, percentile: 22Part D claim volume, percentile in specialty: 70 · MIPS quality, percentile: 15Part D claim volume, percentile in specialty: 12 · MIPS quality, percentile: 98Part D claim volume, percentile in specialty: 60 · MIPS quality, percentile: 20Part D claim volume, percentile in specialty: 37 · MIPS quality, percentile: 13Part D claim volume, percentile in specialty: 45 · MIPS quality, percentile: 35Part D claim volume, percentile in specialty: 18 · MIPS quality, percentile: 43Part D claim volume, percentile in specialty: 75 · MIPS quality, percentile: 10Part D claim volume, percentile in specialty: 38 · MIPS quality, percentile: 12Part D claim volume, percentile in specialty: 23 · MIPS quality, percentile: 72Part D claim volume, percentile in specialty: 2 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 10 · MIPS quality, percentile: 2Part D claim volume, percentile in specialty: 53 · MIPS quality, percentile: 8Part D claim volume, percentile in specialty: 82 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 87 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 88 · MIPS quality, percentile: 3Part D claim volume, percentile in specialty: 33 · MIPS quality, percentile: 92Part D claim volume, percentile in specialty: 13 · MIPS quality, percentile: 40Part D claim volume, percentile in specialty: 83 · MIPS quality, percentile: 27Part D claim volume, percentile in specialty: 85 · MIPS quality, percentile: 97Part D claim volume, percentile in specialty: 98 · MIPS quality, percentile: 0Part D claim volume, percentile in specialty: 27 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 48 · MIPS quality, percentile: 78Part D claim volume, percentile in specialty: 50 · MIPS quality, percentile: 5Part D claim volume, percentile in specialty: 93 · MIPS quality, percentile: 62Part D claim volume, percentile in specialty: 90 · MIPS quality, percentile: 28Part D claim volume, percentile in specialty: 55 · MIPS quality, percentile: 32Part D claim volume, percentile in specialty: 97 · MIPS quality, percentile: 25Part D claim volume, percentile in specialty: 65 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 8 · MIPS quality, percentile: 17Part D claim volume, percentile in specialty: 73 · MIPS quality, percentile: 48Part D claim volume, percentile in specialty: 42 · MIPS quality, percentile: 33Part D claim volume, percentile in specialty: 25 · MIPS quality, percentile: 7Part D claim volume, percentile in specialty: 15 · MIPS quality, percentile: 30Part D claim volume, percentile in specialty: 47 · MIPS quality, percentile: 45Part D claim volume, percentile in specialty: 30 · MIPS quality, percentile: 82Part D claim volume, percentile in specialty: 100 · MIPS quality, percentile: 98Part D claim volume, percentile in specialty: 40 · MIPS quality, percentile: 68Part D claim volume, percentile in specialty: 0 · MIPS quality, percentile: 73Part D claim volume, percentile in specialty: 78 · MIPS quality, percentile: 50Part D claim volume, percentile in specialty: 52 · MIPS quality, percentile: 55Part D claim volume, percentile in specialty: 58 · MIPS quality, percentile: 85Part D claim volume, percentile in specialty: 57 · MIPS quality, percentile: 63Part D claim volume, percentile in specialty: 72 · MIPS quality, percentile: 87Part D claim volume, percentile in specialty: 77 · MIPS quality, percentile: 57Part D claim volume, percentile in specialty: 35 · MIPS quality, percentile: 67Part D claim volume, percentile in specialty: 95 · MIPS quality, percentile: 92Brian Lum, MD-Part D claim volume, percentile in specialty: 69 · MIPS quality, percentile: 31
Part D claim volume vs MIPS quality, by specialty percentile

Each dot is one family medicine physician peer from a representative sample of 60; the gold marker is Brian Lum, MD. Source: CMS Medicare Part D Prescriber data and the CMS Merit-based Incentive Payment System, 2023.

Board certification likely (heuristic, not verified)

Brian Lum, MD 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 Brian Lum, MD?

Near national average

NPI registry status

Active

Issued 03/29/2007

NPI 1245359132

Primary specialty

Family Medicine Physician

High-volume

147,640 US NPIs in this specialty

Medicare Part D claims

5,503 61% vs specialty avg

2023 prescription claims

Specialty avg: 3,418

MIPS final score

80.1/100 3 pts vs avg

Above neutral band

vs 83.1 national avg

Specialty distribution in South Carolina

How Family Medicine Physician compares to other specialties among South Carolina providers

South Carolina providers

Largest specialties in South Carolina (% of in-state providers)

Pharmacist - 6.2%Pharmacist6.2%Mental Health Counselor - 5.1%Mental Health Counselor5.1%Family Nurse Practitioner - 4.6%Family Nurse Practitioner4.6%Physical Therapist - 4.5%Physical Therapist4.5%Behavior Technician - 3.8%Behavior Technician3.8%Speech-Language Pathologist - 3.7%Speech-Language Pathologist3.7%Family Medicine Physician - 3.1%Family Medicine Physician3.1%
Largest specialties in South Carolina (% of in-state providers)

Medicare quality performance, MIPS

Brian Lum, MD's 2023 MIPS final score plotted against the Family Medicine Physician national average

Near national average
MIPS Final Score
80.1/100
vs 83.1 national avg · 2023 performance year

MIPS final score (Family Medicine Physician) - 80.1/100 vs national avg 83.1

0%100%National avg83%80.1%
MIPS final score (Family Medicine Physician) - 80.1/100 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).

Brian Lum, MD appears in the CMS NPPES registry as a Family Medicine Physician provider holding MD credentials at 811 PENDLETON ST STE 10, Greenville, SC, 29601, with a listed phone of (864) 250-0607. NPI 1245359132 was issued on 03/29/2007. Because NPPES data is self-reported by the provider and refreshed monthly, the address, phone, and specialty reflect what Lum 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 5,503 prescription claims written by this provider, covering 724 Medicare beneficiaries and totaling roughly $475K in drug spend, split 8% brand-name and 90% generic by claim count, with an opioid prescribing rate of 5.8%. 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. On the CMS Merit-based Incentive Payment System, this provider earned a Final Score of 80.1/100 for the 2023 performance year (Quality 83.4, Cost 51), compared with the national average of 83.1.

Family Medicine Physician is a high-volume specialty nationwide, with 147,640 enrolled providers across 56 states and an average of 3,418 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

811 PENDLETON ST STE 10
Greenville, SC 29601

Provider Details

NPI 1245359132
Specialty Family Medicine Physician
Credentials MD
Gender Male
NPI Issued 03/29/2007

CMS Quality Score (MIPS)

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

80.0777
Final Score
Avg: 83.1
83.4448
Quality
50.9808
Cost
99
Promoting Interoperability

Reporting: Group practice

Hospital and facility affiliations

Facilities where Brian Lum, 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.

Aid Upstate
Greenville, SC
Centerwell Senior Primary Care SC PC
Greer, SC

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 Brian Lum, MD. Source: openpaymentsdata.cms.gov.

Total received

$33

Largest payer

Inari Medical, 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.

Brand vs generic prescribing mix · Generic-heavy

Brian Lum, MD - brand share 8.0%
Family Medicine Physician average

8% brand-name claims vs 90% generic, on 5,503 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.

5,503
Total Claims
$475K
Total Drug Cost
724
Medicare Beneficiaries

Prescribing Breakdown

30-Day Fills
12,620
Total Day Supply
366,442
Brand vs Generic
8% brand / 90% generic
Brand Drug Cost
$406K
Generic Drug Cost
$66K
Opioid Claims
321 (5.8% rate)
Antibiotic Claims
151

Patient Demographics

Average Patient Age
72.1 years
Avg HCC Risk Score
1.66
Gender Split
66% female / 34% male
Age Distribution
<65: 105, 65-74: 330, 75-84: 233, 85+: 56

Top Prescribed Drugs (Medicare Part D)

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

What Brian Lum, 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
Atorvastatin Calcium
240
Amlodipine Besylate
171
Levothyroxine Sodium
168
Hydrocodone-Acetaminophen
Hydrocodone/Acetaminophen
164
Rosuvastatin Calcium
152
Omeprazole
146
Lisinopril
137
Losartan Potassium
134
Gabapentin
132
Pantoprazole Sodium
106

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

Family Medicine Physician Overview

How Brian Lum, MD fits within the Family Medicine Physician landscape nationally.

147,640
Family Medicine Physician Providers in US
56
States with Family Medicine Physician
3,418
Avg Claims per Provider

Brian Lum, MD's 5,503 claims are above the specialty average of 3,418.

Nearby Family Medicine Physician Providers in South Carolina

Other clinicians with the same primary specialty enrolled in South Carolina, drawn from the same CMS NPPES roster as Lum.

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

Before you book an appointment

Use this federal record as your verification checklist, not as a recommendation.

  • Confirm the NPI record is current in the official CMS registry, providers update their own NPPES details, and moves can lag. Verify this NPI
  • Check the active license and any disciplinary history with the South Carolina medical board, federal registration is not a license check. Credential verification guide
  • Weigh a second option: compare this provider with a nearby Family Medicine Physician peer on Medicare volume and prescribing patterns. Compare providers

Medicare Part D and MIPS figures describe practice patterns in federal programs only, they are not quality ratings, and PlainDoctor does not rate, rank, or recommend providers.

Frequently Asked Questions

What is Brian Lum, MD's specialty?
Brian Lum, MD specializes in Family Medicine Physician and practices in Greenville, South Carolina. Credentials: MD.
How much does Brian Lum, MD prescribe under Medicare Part D?
In 2023, Brian Lum, MD wrote 5,503 Medicare Part D claims totaling $475K in drug costs for 724 beneficiaries.
What is Brian Lum, MD's Medicare quality score?
Brian Lum, MD has a CMS MIPS Final Score of 80.1/100 (Quality: 83.4, Cost: 51). The national average MIPS Final Score is 83.1. Source: CMS Merit-based Incentive Payment System (MIPS) 2023.
Where is Brian Lum, MD located?
Brian Lum, MD is located at 811 PENDLETON ST STE 10, Greenville, SC, 29601. Phone: (864) 250-0607.
What is Brian Lum, MD's NPI number?
Brian Lum, MD's National Provider Identifier (NPI) is 1245359132, issued on 03/29/2007.
Does Brian Lum, MD prescribe more brand-name or generic drugs?
Brian Lum, MD's prescribing is 8% brand-name and 90% generic drugs by claim count, with $406K in brand drug costs.
Does Brian Lum, MD prescribe opioids?
Yes, Brian Lum, MD had 321 opioid claims in 2023 with an opioid prescribing rate of 5.8%.
How many Family Medicine Physician providers are there in the US?
There are 147,640 Family Medicine Physician providers across 56 states in the US. The average Family Medicine Physician provider writes 3,418 Medicare Part D claims per year.
What drugs does Brian Lum, MD prescribe most often?
Based on 2023 Medicare Part D data, Brian Lum, MD's most frequently prescribed drugs include Atorvastatin Calcium, Amlodipine Besylate, Levothyroxine Sodium. This reflects Medicare Part D prescriptions only and does not include commercial insurance or other payer types.
Does Brian Lum, MD accept Medicare?
Brian Lum, MD appears in CMS Medicare data with 5,503 Part D claims and 724 Medicare beneficiaries in 2023. Contact the provider's office directly to confirm current Medicare enrollment and accepted plans.
How can I verify Brian Lum, MD's credentials?
Brian Lum, MD's NPI is 1245359132 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.
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 PlainDoctor editorial team.