Ronald Chaplan, M.D.
NPI 1255403531 · Orthopaedic Surgery Physician · Monterey, CA
Enrolled with Medicare as Practitioner - Orthopedic Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald Chaplan, M.D. is a Orthopaedic Surgery Physician provider in Monterey, CA (NPI 1255403531).
Provider details
- NPI number
- 1255403531
- Entity type
- Individual
- Primary specialty
- Orthopaedic Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Male
- Sole proprietor
- Yes
- License
- G41513 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
19 yrs in NPPES registry
- Profile completeness38% of score
100% of core fields populated
- Practice footprint23% of score
1 documented practice location
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.
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-11-14
- Last updated
- 2007-07-09
Frequently asked questions
- What is Ronald Chaplan's NPI number?
- Ronald Chaplan's National Provider Identifier (NPI) is 1255403531, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Ronald Chaplan's specialty?
- Ronald Chaplan is listed in the NPPES registry with a primary specialty of Orthopaedic Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald Chaplan located?
- Ronald Chaplan's practice location on file with NPPES is 900 Cass St Ste 200, Monterey, CA 93940-4544.
- What is Ronald Chaplan's phone number?
- The practice phone number listed in the NPPES registry for Ronald Chaplan is (831) 655-2122.
- Does Ronald Chaplan accept Medicare?
- Ronald Chaplan is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Ronald Chaplan's NPI active?
- Yes — Ronald Chaplan's NPI (1255403531) is active in the NPPES registry as of the last update on 2007-07-09.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.