William Karls, MD
NPI 1770524183 · Psychiatry Physician · Montrose, CO
Enrolled with Medicare as Practitioner - Psychiatry · source: CMS PECOS Public Provider Enrollment (2026.04.01)
William Karls, MD is a Psychiatry Physician provider in Montrose, CO (NPI 1770524183).
Provider details
- NPI number
- 1770524183
- Entity type
- Individual
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Male
- Sole proprietor
- No
- License
- 34130 (CO)
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
20 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
67 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 | 42 | $121 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 25 | $79 |
Typical Medicare-allowed amounts for these services range $79–$121 (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 · 35 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Aripiprazole | 239 | 27 |
| Trazodone Hcl | 182 | 20 |
| Buspirone Hcl | 178 | 20 |
| Sertraline Hcl | 149 | 13 |
| Quetiapine Fumarate | 143 | 16 |
| Lorazepam | 131 | 19 |
| Lamotrigine | 129 | 14 |
Practice location
Mailing address
Additional practice locations (2)
- 281 Sawyer DrSuite 100Durango, CO 81303-3409Phone: (970) 259-2162Fax: (970) 247-0455
- 300 N Cascade Ave Ste aMontrose, CO 81401-3537Phone: (970) 252-3200Fax: (970) 249-8793
Registry dates
- Enumerated
- 2006-06-09
- Last updated
- 2026-02-09
- Certified
- 2026-02-09
Frequently asked questions
- What is William Karls's NPI number?
- William Karls's National Provider Identifier (NPI) is 1770524183, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is William Karls's specialty?
- William Karls is listed in the NPPES registry with a primary specialty of Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is William Karls located?
- William Karls's practice location on file with NPPES is 605 Miami Rd, Montrose, CO 81401-4108.
- What is William Karls's phone number?
- The practice phone number listed in the NPPES registry for William Karls is (970) 252-3200.
- Does William Karls accept Medicare?
- William Karls is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is William Karls's NPI active?
- Yes — William Karls's NPI (1770524183) is active in the NPPES registry as of the last update on 2026-02-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.