Long Thang Quan, M.D., PH.D.
Dermatology Physician · Columbia, SC
Long Thang Quan, M.D., PH.D. is a dermatology physician with a practice address in Columbia, South Carolina, and NPI 1194784058, issued on Mar 20, 2006. Check the license (South Carolina 22472, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Long Thang Quan
- Credential
- M.D., PH.D.
- Primary taxonomy
- Dermatology Physician 207N00000X
- License number
- 22472 SC
Self-reported in NPPES; status is on the state search - Practice location
- 1706 Saint Julian PL, Columbia, SC 29204
- Phone
- (803) 771-7506
- Enumerated
- Mar 20, 2006
- Record last updated
- Oct 9, 2007 (not updated in 19 years: call before relying on the address or phone)
- Fax
- (803) 771-9455
- Medicare enrollment
- Enrolled (PECOS I20100218000099); accepts Medicare assignment
- Medical or professional school
- Duke University School Of Medicine, 1996
- Entity
- Type 1 · individual
8 nearest dermatology physician records → All 217 in South Carolina → Look up another NPI →
Also registered at 1706 Saint Julian PL
A shared address usually means a shared clinic or building; it does not show who employs whom.
- Mark Blaskis, MDDermatology Physician1841259124
- Annette Lynn, M.D.Dermatology Physician1194792010
- Lori Mauldin, PA-CDermatology Physician1649221854
- Kaitlyn Powell, M.D.Dermatology Physician1356753461
- Melissa SennPhysician Assistant1033735204
- Lauren Vargo, PA-CDermatology Physician1689625808
Verify Long Thang Quan in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 22472Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
82% fewer Medicare Part D claims than the average dermatology physician in 2024
141 Medicare Part D claims for 93 beneficiaries, against an average of 797 among the 12,802 providers of this specialty who prescribed in Part D. 14 claims were for opioids.
Most prescribed
- Fluorouracil59 claims
- Imiquimod20 claims
- Doxycycline Hyclate17 claims
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
The MIPS final score for 2023 (Medicare payment program): 0 of 100
The Merit-based Incentive Payment System score is reported for this clinician. Four categories are weighted into the final score; the average among 454,083 clinicians with a measured score was 83.5.
Source: CMS Quality Payment Program, MIPS performance year 2023; category weights for 2023 (qpp.cms.gov).
Industry payments in 2024: $391.65
21 payments; by number, the most common kind was food and beverage; the largest payer was Lilly USA, LLC. The 10,250 providers of this specialty with any payment received $8,544.61 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Bills Medicare through one group practice
- Carolina Dermatology GrpColumbia, SC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Long Thang Quan among 217 dermatology physician records in South Carolina
Long Thang Quan, M.D., PH.D. is one of 217 dermatology physician records with a practice address in South Carolina. 82% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 8% of them.
- NPI issued2006 · 8% of these records are older, 56% newer
- In a Medicare fileYes · 82% of these records are
- In the CMS Doctors and Clinicians fileYes · 71% of these records are
- Graduated1996 · median 2008 among the 153 with a school on file
- Record last updated2007 · 47% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207N00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Dermatology Physician providers in South Carolina
There are 217 dermatology physician records in South Carolina.
All 217 in South Carolina → Every provider in Columbia → Dermatology Physician nationwide →
The 8 dermatology physician records with the nearest ZIP codes
- Mark Blaskis, MDColumbia, SC 292041841259124
- Allison Cashman, M.D.Columbia, SC 292041063433936
- Cody Connor, M.D.Columbia, SC 292041447631619
- Ann Harriott Ervin, MDColumbia, SC 292041134217565
- Asha James, M.D.Columbia, SC 292041669445235
- Richard Laws, M.D.Columbia, SC 292041487602207
- Annette Lynn, M.D.Columbia, SC 292041194792010
- Lori Mauldin, PA-CColumbia, SC 292041649221854
Common questions
What is Long Thang Quan, M.D., PH.D.'s NPI number?
Long Thang Quan, M.D., PH.D.'s National Provider Identifier (NPI) is 1194784058, issued on Mar 20, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Long Thang Quan, M.D., PH.D. located?
The NPPES record lists a practice address at 1706 Saint Julian PL, Columbia, SC, 29204. Phone: (803) 771-7506. Providers update this record themselves, so call before visiting.
How can I verify Long Thang Quan, M.D., PH.D.'s license?
NPPES lists South Carolina license number 22472, as entered by the provider. Search the South Carolina Board of Medical Examiners at https://verify.llronline.com/LicLookup/Med/Med.aspx?div=22. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Long Thang Quan, M.D., PH.D. prescribe under Medicare Part D?
In 2024, Long Thang Quan, M.D., PH.D. had 141 Medicare Part D claims for 93 beneficiaries; the average among dermatology physician prescribers was 797. Part D covers Medicare prescriptions only.
What is Long Thang Quan, M.D., PH.D.'s MIPS final score?
The 2023 MIPS final score is 0 of 100. The average among 454,083 clinicians with a measured score was 83.5.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.