Mark Slaven, MD
NPI 1750498416 · Psychiatry Physician · Oneida, NY
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Mark Slaven, MD is a Psychiatry Physician provider in Oneida, NY (NPI 1750498416).
Provider details
- NPI number
- 1750498416
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- Yes
- License
- 1964691 (NY)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure28% of score
19 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
233 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 | 136 | $118 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 68 | $160 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 29 | $83 |
Typical Medicare-allowed amounts for these services range $83–$160 (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 · 74 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Risperidone | 883 | 103 |
| Buspirone Hcl | 834 | 97 |
| Sertraline Hcl | 717 | 111 |
| Divalproex Sodium | 690 | 78 |
| Fluoxetine Hcl | 636 | 77 |
| Lithium Carbonate | 620 | 78 |
| Olanzapine | 480 | 75 |
| Quetiapine Fumarate |
Practice location
Mailing address
Additional practice locations (1)
- 165 Main StOneida, NY 13421-1648Phone: (315) 363-9281Fax: (315) 363-9286
Registry dates
- Enumerated
- 2006-08-25
- Last updated
- 2019-01-31
Frequently asked questions
- What is Mark Slaven's NPI number?
- Mark Slaven's National Provider Identifier (NPI) is 1750498416, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Mark Slaven's specialty?
- Mark Slaven is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Mark Slaven located?
- Mark Slaven's practice location on file with NPPES is 607 Seneca St, Oneida, NY 13421-2627.
- What is Mark Slaven's phone number?
- The practice phone number listed in the NPPES registry for Mark Slaven is (315) 363-8050.
- Does Mark Slaven accept Medicare?
- Mark Slaven is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Mark Slaven's NPI active?
- Yes — Mark Slaven's NPI (1750498416) is active in the NPPES registry as of the last update on 2019-01-31.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.