Christiaan Bates, MD
NPI 1235795329 · Psychiatry Physician · Sioux Falls, SD
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Christiaan Bates, MD is a Psychiatry Physician provider in Sioux Falls, SD (NPI 1235795329).
Provider details
- NPI number
- 1235795329
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 72748 (MN)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
7 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
238 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 89 | $113 |
| Psychotherapy With Evaluation and Management Visit, 30 Minutes90833 | 77 | $68 |
| Psychiatric Diagnostic Evaluation With Medical Services90792 | 55 | $182 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 17 | $160 |
Typical Medicare-allowed amounts for these services range $68–$182 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 31 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Trazodone Hcl | 86 | 32 |
| Duloxetine Hcl | 68 | 17 |
| Quetiapine Fumarate | 68 | 17 |
| Bupropion Hclbrand: Bupropion Xl | 60 | 17 |
| Escitalopram Oxalate | 58 | 14 |
| Aripiprazole | 58 | 15 |
| Buspirone Hcl |
Practice location
Mailing address
Additional practice locations (1)
- 6655 S Yale AveTulsa, OK 74136-3326Phone: (918) 491-3700Fax: (918) 481-4063
Registry dates
- Enumerated
- 2019-05-14
- Last updated
- 2023-12-28
- Certified
- 2023-06-30
Frequently asked questions
- What is Christiaan Bates's NPI number?
- Christiaan Bates's National Provider Identifier (NPI) is 1235795329, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Christiaan Bates's specialty?
- Christiaan Bates is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Christiaan Bates located?
- Christiaan Bates's practice location on file with NPPES is 1400 W 22nd St, Sioux Falls, SD 57105-1554.
- What is Christiaan Bates's phone number?
- The practice phone number listed in the NPPES registry for Christiaan Bates is (605) 322-5737.
- Does Christiaan Bates accept Medicare?
- Christiaan Bates is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Christiaan Bates's NPI active?
- Yes — Christiaan Bates's NPI (1235795329) is active in the NPPES registry as of the last update on 2023-12-28.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.