Dr. William James Frederick III, MD, PhD
- Medicare services, 2023
- 41
- Part D claims, 2020
- 11
- MIPS score, 2024
- 89
- Hospital affiliations
- 2
- Industry payments
- $72
- Practice address
- 300 Pasteur Drive, Stanford, CA 94305
- Practice phone
- Call (650) 723-4000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Frederick's professional email, personal email and mobile number
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Dr. William James Frederick III is an internist in Stanford, California
Dr. Frederick practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University.
Dr. Frederick's NPI, 1841592805, was assigned on November 24, 2010. Dr. Frederick graduated from UC Davis School of Medicine in 2010. Dr. Frederick holds California license A123614.
- NPI
- 1841592805NPI Registry (opens in a new tab)
- Medicare PAC ID
- 8325276751
- NPI enumeration date
- November 24, 2010
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (650) 723-4000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 42
- Medical school graduation
- 2010
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William James Frederick III practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California
Dr. Frederick's primary practice is Stanford Hospital at 300 Pasteur Drive, at 300 Pasteur Drive, Stanford, CA 94305 in Santa Clara County. The practice phone is (650) 723-4000.
- Stanford Hospital at 300 Pasteur Drive300 Pasteur Drive, Stanford, CA 94305 · Santa Clara CountyPhone(650) 723-4000
Source: Dmand AI Affiliation Data
Dr. William James Frederick III is affiliated with 2 sites of care and 3 medical groups
Dr. Frederick's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. The medical group on file is Stanford Health Care. Dmand AI also links Dr. Frederick to 1 more hospital and 2 medical groups, each named with a free account. Dr. Frederick's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William James Frederick III's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Frederick practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Stanford Hospital at 300 Pasteur Drive | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William James Frederick III is one of 16,751 internists in California
Internal medicine is Dr. Frederick's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Frederick is board certified in internal medicine by the American Board of Internal Medicine. Dr. Frederick is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acute diabetes and urinary tract infection among the conditions Dr. Frederick treats.
Internists near Dr. Frederick
Counts of internists 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
Dr. William James Frederick III billed Medicare for 41 services in 2023
CMS data shows 41 Medicare services from Dr. Frederick across 1 procedure code in 2023. Medicare paid $2,528 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Frederick's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Office and hospital visits
- 2022: 472023: 4113%
Dr. Frederick compared with the California median for internists, 2023
- Dr. Frederick
- California median
- Medicare services
- 41vs 36189% below
- Part D claims
- 11vs 42197% below
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Frederick's most billed Medicare procedure codes, 2023
CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Frederick and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William James Frederick III's patients have a median age of 61
Across all payers, Dmand AI patient panel data puts Dr. Frederick's median patient age at 61, with 60% women.
Dr. Frederick's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 61
Patient panel by sex, all payers
- Women60%
- Men39%
Source: Dmand AI Patient Panel Data
Dr. William James Frederick III wrote 11 Medicare Part D claims in 2020
In 2020, Dr. Frederick wrote 11 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $121 in total drug cost. In 2019, CMS named 11 claims across 1 drug.
Dr. Frederick's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 112020: 11No change
Drugs named by CMS: 1 in 2020, 1 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. William James Frederick III scored 89 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 89 out of 100 for Dr. Frederick for performance year 2024, reported as part of a group. Dr. Frederick accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Frederick's MIPS scores, performance year 2024
- 89of 100Final score
- 87.1of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 70of 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
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Dr. William James Frederick III received $72 in industry payments from 2019 to 2021
CMS Open Payments shows 4 general payments to Dr. Frederick from 2 drug and device companies from 2019 to 2021. Food and beverage make up the largest share, 100% of the total. Eli Lilly and Company paid the most, $57.
General payments to Dr. Frederick by program year, 2019 to 2021
Companies that paid Dr. Frederick the most, 2019 to 2021
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William James Frederick III graduated from UC Davis School of Medicine
Dr. Frederick graduated from UC Davis School of Medicine in 2010. Dr. Frederick is a member of ACP and AMA.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. William James Frederick III accepts plans from 6 insurance carriers
Dr. Frederick is in network with 6 carriers, including Aetna, Excellus BlueCross BlueShield and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Aetna
- Excellus BlueCross BlueShield
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- HCSC
- CMS Medicare
Plan types Dr. Frederick accepts, by number of carriers
- Medicare5
- PPO5
- HMO3
- EPO2
- POS2
Source: Dmand AI Insurance Network Data
Sources for Dr. William James Frederick III'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 | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| 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 Dr. William James Frederick III
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. William James Frederick III's NPI number?
Dr. William James Frederick III's NPI number is 1841592805. It was assigned on November 24, 2010, and it is active in the NPI Registry.
What kind of doctor is Dr. William James Frederick III?
Dr. William James Frederick III is an internist in Stanford, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. William James Frederick III practice?
Dr. Frederick practices at 300 Pasteur Drive, Stanford, CA 94305. Dr. Frederick's primary practice is Stanford Hospital at 300 Pasteur Drive in Stanford, California, part of Stanford University. Dmand AI also links Dr. Frederick to 1 hospital and 2 medical groups.
What is Dr. William James Frederick III's office phone number?
The practice phone on file for Dr. Frederick is (650) 723-4000.
What is Dr. William James Frederick III's medical license number?
Dr. Frederick holds California license A123614.
Which hospitals is Dr. William James Frederick III affiliated with?
Dr. Frederick practices at Stanford Hospital at 300 Pasteur Drive in Stanford, California. Dmand AI links Dr. Frederick to 1 more hospital.
What medical group is Dr. William James Frederick III part of?
Dr. Frederick is linked to Stanford Health Care. Dmand AI links Dr. Frederick to 2 more medical groups.
Does Dr. William James Frederick III accept Medicare?
Yes. CMS data shows Dr. Frederick billed Medicare for 41 services in 2023, and Dr. Frederick accepts Medicare assignment.
What is Dr. William James Frederick III's MIPS score?
Dr. Frederick's MIPS final score for performance year 2024 is 89 out of 100, reported as part of a group.
Is Dr. William James Frederick III board certified?
Yes. Dr. Frederick is board certified in internal medicine by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. William James Frederick III bill to Medicare?
In 2023, Dr. Frederick's most billed Medicare services were hospital inpatient care (99232).
Where did Dr. William James Frederick III go to medical school?
Dr. Frederick graduated from UC Davis School of Medicine in 2010.
What drugs does Dr. William James Frederick III prescribe most?
In 2020 Medicare Part D data, Dr. Frederick's most prescribed drugs by claims were Letrozole.
Has Dr. William James Frederick III received payments from drug or device companies?
CMS Open Payments shows $72 in general payments to Dr. Frederick from 2 companies from 2019 to 2021. The largest total came from Eli Lilly and Company.
How long has Dr. William James Frederick III been practicing?
Dr. Frederick graduated from medical school in 2010, 16 years ago.
What insurance does Dr. William James Frederick III accept?
Dr. Frederick is in network with 6 carriers, including Aetna, Excellus BlueCross BlueShield and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
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