Douglas Rieth, M.D.
NPI 1225004229 · Internal Medicine Physician · Spartanburg, SC
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Douglas Rieth, M.D. is a Internal Medicine Physician provider in Spartanburg, SC (NPI 1225004229).
Provider details
- NPI number
- 1225004229
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- No
- License
- 17565 (SC)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
20 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
3,261 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 670 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 619 | $122 |
| Complete Blood Cell Count (red Cells, White Blood Cell, Platelets), Automated Test and Automated Differential White Blood Cell Count85025 | 279 | $8 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 257 | $126 |
| Manual Urinalysis Test With Examination Using Microscope, Automated81001 | 229 | $3 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 146 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 536 | 154 |
| Amlodipine Besylate | 370 | 101 |
| Levothyroxine Sodium | 276 | 75 |
| Famotidine | 244 | 78 |
| Rosuvastatin Calcium | 236 | 66 |
| Irbesartan | 224 | 58 |
| Losartan Potassium | 209 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,497 across 91 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-02-28
- Last updated
- 2020-12-10
- Certified
- 2020-12-10
Frequently asked questions
- What is Douglas Rieth's NPI number?
- Douglas Rieth's National Provider Identifier (NPI) is 1225004229, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Douglas Rieth's specialty?
- Douglas Rieth is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Douglas Rieth located?
- Douglas Rieth's practice location on file with NPPES is 1330 Boiling Springs Rd Ste 2500, Spartanburg, SC 29303-4214.
- What is Douglas Rieth's phone number?
- The practice phone number listed in the NPPES registry for Douglas Rieth is (864) 585-5433.
- Does Douglas Rieth accept Medicare?
- Douglas Rieth is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Douglas Rieth's NPI active?
- Yes — Douglas Rieth's NPI (1225004229) is active in the NPPES registry as of the last update on 2020-12-10.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.