Douglas Rieth, M.D.
Internal Medicine Physician · Spartanburg, SC
Douglas Rieth, M.D. is an internal medicine physician with a practice address in Spartanburg, South Carolina, and NPI 1225004229, issued on Feb 28, 2006. Check the license (South Carolina 17565, as entered in NPPES) on the South Carolina Board of Medical Examiners; the Medicare figures below come from public CMS files.
- Name
- Douglas Rieth
- Credential
- M.D.
- Primary taxonomy
- Internal Medicine Physician 207R00000X
- License number
- 17565 SC
Self-reported in NPPES; status is on the state search - Practice location
- 1330 Boiling Springs RD Ste 2500, Spartanburg, SC 29303
- Phone
- (864) 585-5433
- Enumerated
- Feb 28, 2006
- Record last updated
- Dec 10, 2020 (not updated in 6 years: call before relying on the address or phone)
- Fax
- (864) 591-4053
- Medicaid ID
- 175651 SC
- Medicare enrollment
- Enrolled (PECOS I20070904000074); accepts Medicare assignment
- Medical or professional school
- Vanderbilt University School Of Medicine, 1993
- Entity
- Type 1 · individual
8 nearest internal medicine physician records → All 1,881 in South Carolina → Look up another NPI →
Also registered at 1330 Boiling Springs RD Ste 2500
A shared address usually means a shared clinic or building; it does not show who employs whom.
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Verify Douglas Rieth in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersSouth Carolina Board of Medical Examiners
Search for license 17565Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
3.0 times the Medicare Part D claims of the average internal medicine physician in 2024
9,381 Medicare Part D claims for 515 beneficiaries, against an average of 3,176 among the 108,855 providers of this specialty who prescribed in Part D. Brand-name drugs were 14% of claims. 275 claims were for opioids.
Most prescribed
- Atorvastatin Calcium536 claims
- Amlodipine Besylate370 claims
- Levothyroxine Sodium276 claims
- Famotidine244 claims
- Rosuvastatin Calcium236 claims
- Irbesartan224 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): 96.1 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: $1,496.84
91 payments; by number, the most common kind was food and beverage; the largest payer was AstraZeneca Pharmaceuticals LP. The 50,334 providers of this specialty with any payment received $1,303.06 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.
One hospital affiliation
- Spartanburg Medical CenterSpartanburg, SC · Acute Care Hospitals2 of 5 stars
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through); hospitals matched to CMS Hospital General Information (Care Compare) (data.cms.gov). Star ratings are CMS hospital ratings, not ratings of this provider.
Douglas Rieth among 1,881 internal medicine physician records in South Carolina
Douglas Rieth, M.D. is one of 1,881 internal medicine physician records with a practice address in South Carolina. 81% 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 7% of them.
- NPI issued2006 · 7% of these records are older, 58% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileYes · 60% of these records are
- Graduated1993 · median 2006 among the 1,119 with a school on file
- Record last updated2020 · 46% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207R00000X and a South Carolina practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
95 internal medicine physician records list a practice address in Spartanburg
They are 95 of the 3,328 NPPES records with a practice address in Spartanburg, and 1,881 internal medicine physician records in South Carolina.
All 1,881 in South Carolina → Every provider in Spartanburg → Internal Medicine Physician nationwide →
The 8 internal medicine physician records with the nearest ZIP codes
- James Brown, M.D.Spartanburg, SC 293031134190077
- Jeffrey Craft, MDSpartanburg, SC 293031114907128
- Pamela Davenport, M.D.Spartanburg, SC 293031801867981
- Coy Eaton, M.D.Spartanburg, SC 293031245206234
- Nicholas Fleming, M.D.Spartanburg, SC 293031104892199
- John Fowler, MDSpartanburg, SC 293031538131933
- Dorotea Gabel, M.D.Spartanburg, SC 293031336110410
- Maria Gacha, MDSpartanburg, SC 293031154397065
Common questions
What is Douglas Rieth, M.D.'s NPI number?
Douglas Rieth, M.D.'s National Provider Identifier (NPI) is 1225004229, issued on Feb 28, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Douglas Rieth, M.D. located?
The NPPES record lists a practice address at 1330 Boiling Springs RD Ste 2500, Spartanburg, SC, 29303. Phone: (864) 585-5433. Providers update this record themselves, so call before visiting.
How can I verify Douglas Rieth, M.D.'s license?
NPPES lists South Carolina license number 17565, 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 Douglas Rieth, M.D. prescribe under Medicare Part D?
In 2024, Douglas Rieth, M.D. had 9,381 Medicare Part D claims for 515 beneficiaries; the average among internal medicine physician prescribers was 3,176. Part D covers Medicare prescriptions only.
What is Douglas Rieth, M.D.'s MIPS final score?
The 2023 MIPS final score is 96.1 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.