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.

OrganizationActive

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

Practice location

351 W Camden St

Suite 100

Baltimore, MD 21201-7912

Phone: (410) 625-2200

Street-level locationGet directions

More MD providers

Mailing address

351 W Camden St

Baltimore, MD 21201-7912

Specialties & taxonomies

Nurse PractitionerPrimary363L00000X
Physician Assistants & Advanced Practice Nursing Providers

Profile Score

Established profile(74/100 index)

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.

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.

Provider details

Practice location

Mailing address

Specialties & taxonomies

Profile Score

Registry dates

Frequently asked questions

Specialties & taxonomies

Profile Score

Frequently asked questions