Ronald D Sager M D Inc
NPI 1518359421 · Addiction Psychiatry Physician · Calabasas, CA
Enrolled with Medicare as Part B Supplier - Clinic/Group Practice · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Ronald D Sager M D Inc is a Addiction Psychiatry Physician organization in Calabasas, CA (NPI 1518359421).
Provider details
- NPI number
- 1518359421
- Entity type
- Organization
- Primary specialty
- Addiction Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Samuel Jiwanmall, Billing Cooridnator(818) 854-6971
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
11 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
- 2015-03-02
- Last updated
- 2024-08-22
- Certified
- 2024-08-22
Frequently asked questions
- What is Ronald D Sager M D Inc's NPI number?
- Ronald D Sager M D Inc's National Provider Identifier (NPI) is 1518359421, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Ronald D Sager M D Inc?
- Ronald D Sager M D Inc is classified in the NPPES registry as Addiction Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Ronald D Sager M D Inc located?
- Ronald D Sager M D Inc's practice location on file with NPPES is 4505 Las Virgenes Rd Ste 202, Calabasas, CA 91302-1956.
- What is Ronald D Sager M D Inc's phone number?
- The practice phone number listed in the NPPES registry for Ronald D Sager M D Inc is (818) 783-3835.
- Does Ronald D Sager M D Inc accept Medicare?
- Ronald D Sager M D Inc is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Who is the authorized official for Ronald D Sager M D Inc?
- The authorized official listed on Ronald D Sager M D Inc's NPPES record is Samuel Jiwanmall, Billing Cooridnator. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Ronald D Sager M D Inc's NPI active?
- Yes — Ronald D Sager M D Inc's NPI (1518359421) is active in the NPPES registry as of the last update on 2024-08-22.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.