OrganizationActive
Robert J Sivak, M.D., Ltd
NPI 1578738936 · Psychiatry Physician · Tempe, AZ
Robert J Sivak, M.D., Ltd is a Psychiatry Physician organization in Tempe, AZ (NPI 1578738936).
Provider details
- NPI number
- 1578738936
- Entity type
- Organization
- Primary specialty
- Psychiatry PhysicianAllopathic & Osteopathic Physicians
- Organization subpart
- No
- Authorized official
- Robert Sivak, President(480) 345-1200
- License
- 12253 (AZ)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Profile Score
Detailed profile(87/100 index)
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure38% of score
18 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
4600 S Mill Ave
Suite 160
Tempe, AZ 85282-6757
Phone: (480) 345-1200
Fax: (480) 345-1281
Street-level locationGet directions
Mailing address
4600 S Mill Ave Ste 160
Tempe, AZ 85282-6758
Registry dates
- Enumerated
- 2008-04-28
- Last updated
- 2008-06-25
Frequently asked questions
- What is Robert J Sivak, M.D., Ltd's NPI number?
- Robert J Sivak, M.D., Ltd's National Provider Identifier (NPI) is 1578738936, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What type of organization is Robert J Sivak, M.D., Ltd?
- Robert J Sivak, M.D., Ltd is classified in the NPPES registry as Psychiatry Physician (Allopathic & Osteopathic Physicians).
- Where is Robert J Sivak, M.D., Ltd located?
- Robert J Sivak, M.D., Ltd's practice location on file with NPPES is 4600 S Mill Ave, Tempe, AZ 85282-6757.
- What is Robert J Sivak, M.D., Ltd's phone number?
- The practice phone number listed in the NPPES registry for Robert J Sivak, M.D., Ltd is (480) 345-1200.
- Who is the authorized official for Robert J Sivak, M.D., Ltd?
- The authorized official listed on Robert J Sivak, M.D., Ltd's NPPES record is Robert Sivak, President. The authorized official registers and maintains the organization's NPI and is not necessarily its owner.
- Is Robert J Sivak, M.D., Ltd's NPI active?
- Yes — Robert J Sivak, M.D., Ltd's NPI (1578738936) is active in the NPPES registry as of the last update on 2008-06-25.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.