William J. Sieber, PhD
- Medicare patients, 2024
- 26
- MIPS score, 2024
- 91
- Hospital affiliations
- 1
- Medical groups
- 2
- State license
- 1
- Practice address
- 9333 Genesee Ave, San Diego, CA 92121
- Practice phone
- Call (858) 882-8350
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Scripps Clinic Medical Group
San Diego, California
Find William Sieber's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
William J. Sieber is a clinical psychologist in San Diego, California
William Sieber practices at Scripps Clinic Medical Group in San Diego, California.
William Sieber's NPI, 1851413165, was assigned on April 6, 2007. William Sieber holds California license 19435.
- NPI
- 1851413165NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1759476302
- NPI enumeration date
- April 6, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (858) 882-8350
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 68
- Medical school graduation
- 1984
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
William J. Sieber practices at Scripps Clinic Medical Group in San Diego, California
William Sieber's primary practice is Scripps Clinic Medical Group, at 9333 Genesee Ave, San Diego, CA 92121 in San Diego County. The practice phone is (858) 882-8350.
- Scripps Clinic Medical Group9333 Genesee Ave, San Diego, CA 92121 · San Diego CountyPhone(858) 882-8350
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
William J. Sieber is affiliated with 2 sites of care and 2 medical groups
William Sieber's primary practice is Scripps Clinic Medical Group in San Diego, California. William Sieber is also affiliated with Hillcrest Medical Center. The medical group on file is UC San Diego Health. Dmand AI also links William Sieber to 1 more medical group, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at William J. Sieber's practice
Dmand AI tracks the electronic health record (EHR) system at each site where William Sieber practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Scripps Clinic Medical Group | Available with a free account |
| +1 more site and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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William J. Sieber is one of 3,615 clinical psychologists in California
Clinical is William Sieber's primary specialty in the NPI Registry, under taxonomy code 103TC0700X. William Sieber is licensed in California.
Specialties and state licenses
- Clinical psychologist, CaliforniaPrimary
Clinical psychologists near William Sieber
Counts of clinical psychologists with a Dmand AI profile, by place and practice. Each opens the list.
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
William J. Sieber treated 26 Medicare patients in 2024, average age 76
CMS counts 26 Medicare patients who saw William Sieber in 2024. The largest group is 75 to 84, with 12 patients. 75% of them have mood disorders, and 65% have arthritis. Their average risk score is 1.20, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts William Sieber's median patient age at 69, with 53% women.
William Sieber's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among William Sieber's Medicare patients, 2024
- Mood disorders75%
- Arthritis65%
- High blood pressure62%
- Anxiety54%
- High cholesterol54%
- Depression50%
Share of Medicare patients with each condition. A patient can have several.
William Sieber's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 69
Patient panel by sex, all payers
- Women53%
- Men46%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
William J. Sieber scored 91 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 91 out of 100 for William Sieber for performance year 2024, reported as part of a group. William Sieber accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists William Sieber as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
William Sieber's MIPS scores, performance year 2024
- 91of 100Final score
- 84.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 74of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
Sources for William J. Sieber's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Clinician Public Reporting: Overall MIPS Performance (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand AI Affiliation Data |
Data last refreshed October 2026Report an inaccuracyRemove my information
FAQ
Frequently asked questions about William J. Sieber
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is William J. Sieber's NPI number?
William J. Sieber's NPI number is 1851413165. It was assigned on April 6, 2007, and it is active in the NPI Registry.
What does William J. Sieber specialize in?
William J. Sieber is a clinical psychologist in San Diego, California. The primary specialty in the NPI Registry is Clinical Psychologist (taxonomy code 103TC0700X).
Where does William J. Sieber practice?
William Sieber practices at 9333 Genesee Ave, San Diego, CA 92121. William Sieber's primary practice is Scripps Clinic Medical Group in San Diego, California. Dmand AI also links William Sieber to 1 medical group.
What is William J. Sieber's office phone number?
The practice phone on file for William Sieber is (858) 882-8350.
What is William J. Sieber's medical license number?
William Sieber holds California license 19435.
Which hospitals is William J. Sieber affiliated with?
William Sieber is affiliated with Hillcrest Medical Center.
What medical group is William J. Sieber part of?
William Sieber is linked to UC San Diego Health. Dmand AI links William Sieber to 1 more medical group.
Does William J. Sieber accept Medicare?
Yes. CMS lists William Sieber as accepting Medicare assignment.
Does William J. Sieber offer telehealth?
Yes. The CMS Doctors and Clinicians file lists William Sieber as offering telehealth services.
What is William J. Sieber's MIPS score?
William Sieber's MIPS final score for performance year 2024 is 91 out of 100, reported as part of a group.
How many Medicare patients does William J. Sieber see?
CMS counts 26 Medicare patients who saw William Sieber in 2024, with an average age of 76.
How long has William J. Sieber been practicing?
William Sieber graduated from medical school in 1984, 42 years ago.
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