Optum Medical Services of California, PC
NPI 1023484177 · Nurse Practitioner · Baltimore, MD
Optum Medical Services of California, PC is a Nurse Practitioner organization in Baltimore, MD (NPI 1023484177).
Provider details
- NPI number
- 1023484177
- Entity type
- Organization
- Primary specialty
- Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Organization subpart
- No
- Authorized official
- Ronald Shumacher, Director(240) 683-5331
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
10 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
- 2015-08-12
- Last updated
- 2015-08-12
Frequently asked questions
- What is Optum Medical Services of California, PC's NPI number?
- Optum Medical Services of California, PC's National Provider Identifier (NPI) is 1023484177, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Optum Medical Services of California, PC?
- Optum Medical Services of California, PC is classified in the NPPES registry as Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Optum Medical Services of California, PC located?
- Optum Medical Services of California, PC's practice location on file with NPPES is 351 W Camden St, Baltimore, MD 21201-7912.
- What is Optum Medical Services of California, PC's phone number?
- The practice phone number listed in the NPPES registry for Optum Medical Services of California, PC is (410) 625-2200.
- Who is the authorized official for Optum Medical Services of California, PC?
- The authorized official listed on Optum Medical Services of California, PC's NPPES record is Ronald Shumacher, Director. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Optum Medical Services of California, PC's NPI active?
- Yes — Optum Medical Services of California, PC's NPI (1023484177) is active in the NPPES registry as of the last update on 2015-08-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.