Dr. William G. Stone, MD
- Medicare services, 2024
- 157
- Medicare patients, 2024
- 109
- Part D claims, 2022
- 21
- MIPS score, 2024
- 86
- Industry payments
- $431
- Practice address
- 1000 Greenley Rd, Sonora, CA 95370
- Practice phone
- Call (209) 536-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Adventist Health Sonora
Sonora, California
Find Dr. Stone'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.
Dr. William G. Stone is a general surgeon in Sonora, California
Dr. Stone practices at Adventist Health Sonora in Sonora, California.
Dr. Stone's NPI, 1255505764, was assigned on April 15, 2008. Dr. Stone graduated from Sanford School of Medicine in 2007. Dr. Stone's California license number on file is C167208.
- NPI
- 1255505764NPI Registry (opens in a new tab)
- NPI enumeration date
- April 15, 2008
- NPI status
- Active
- Practice phone
- (209) 536-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 2007
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Practice Data
Dr. William G. Stone practices at Adventist Health Sonora in Sonora, California
Dr. Stone's primary practice is Adventist Health Sonora, at 1000 Greenley Rd, Sonora, CA 95370 in Tuolumne County. The practice phone is (209) 536-5000.
- Adventist Health Sonora1000 Greenley Rd, Sonora, CA 95370 · Tuolumne CountyPhone(209) 536-5000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. William G. Stone is affiliated with 2 sites of care and 1 medical group
Dr. Stone's primary practice is Adventist Health Sonora in Sonora, California. The medical group on file is Surgical Solutions LLC. Dmand AI also links Dr. Stone to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. William G. Stone's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Stone practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Adventist Health Sonora | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William G. Stone is one of 2,926 general surgeons in California
Surgery is Dr. Stone's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Stone is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Stone's licenses on file in 4 states: California, South Dakota, Colorado and Michigan.
Specialties and state licenses
- Surgery, CaliforniaPrimary
- South Dakota license
- Colorado license
- Michigan license
Clinical focus
Dmand AI lists colon removal and gallbladder removal among the conditions Dr. Stone treats.
General surgeons near Dr. Stone
Counts of general surgeons 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 G. Stone billed Medicare for 157 services in 2024
CMS data shows 157 Medicare services from Dr. Stone across 4 procedure codes in 2024, for 109 Medicare patients. Medicare paid $13,207 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Stone's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 712024: 157121%
Dr. Stone compared with the California median for general surgeons, 2024
- Dr. Stone
- California median
- Medicare services
- 157vs 1665% below
- Medicare patients
- 109vs 12110% below
- Part D claims
- 21vs 3438% below
Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.
Dr. Stone's most billed Medicare procedure codes, 2024
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. Stone and other general surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William G. Stone treated 109 Medicare patients in 2024, average age 74
CMS counts 109 Medicare patients who saw Dr. Stone in 2024. The largest group is 65 to 74, with 52 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 30% are also on Medicaid. Their average risk score is 1.58, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Dr. Stone's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Stone's Medicare patients by sex, 2024
- Women6156%
- Men4844%
Chronic conditions among Dr. Stone's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis50%
- Anxiety35%
- COPD34%
- Diabetes31%
- Mood disorders31%
- Depression28%
Share of Medicare patients with each condition. A patient can have several.
Source: Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William G. Stone wrote 21 Medicare Part D claims in 2022
In 2022, Dr. Stone wrote 21 Medicare Part D claims. They cover 1 drug, with $142 in total drug cost. In 2021, CMS named 22 claims across 1 drug.
Dr. Stone's most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 222022: 215%
Drugs named by CMS: 1 in 2022, 1 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
Dr. William G. Stone scored 86 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 86 out of 100 for Dr. Stone for performance year 2024, reported as part of a group.
Dr. Stone's MIPS scores, performance year 2024
- 86of 100Final score
- 81of 100Quality
- 100of 100Promoting Interoperability
- 40of 100Improvement Activities
- 71of 100Cost
Each score is out of 100. The final score weighs the categories CMS scored for this clinician.
Source: Clinician Public Reporting: Overall MIPS Performance (CMS), 2024 data, released September 10, 2026
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Dr. William G. Stone received $431 in industry payments from 2016 to 2024
CMS Open Payments shows 30 general payments to Dr. Stone from 17 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. MDD US Operations, LLC paid the most, $89.
General payments to Dr. Stone by program year, 2016 to 2024
Companies that paid Dr. Stone the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William G. Stone graduated from Sanford School of Medicine
Dr. Stone graduated from Sanford School of Medicine in 2007.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. William G. Stone accepts plans from 7 insurance carriers
Dr. Stone is in network with 7 carriers, including United Healthcare, Blue Cross Blue Shield of North Dakota and Medica. HMO plans come from the most carriers, 4. Check the plan with the practice before a visit.
- United Healthcare
- Blue Cross Blue Shield of North Dakota
- Medica
- HCSC
- Aetna
- CMS Medicare
- Elevance
Plan types Dr. Stone accepts, by number of carriers
- HMO4
- Medicare4
- PPO4
- POS2
- Medicaid1
Source: Dmand AI Insurance Network Data
Sources for Dr. William G. Stone'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 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 | Medicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | 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 G. Stone
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 G. Stone's NPI number?
Dr. William G. Stone's NPI number is 1255505764. It was assigned on April 15, 2008, and it is active in the NPI Registry.
What kind of doctor is Dr. William G. Stone?
Dr. William G. Stone is a general surgeon in Sonora, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. William G. Stone practice?
Dr. Stone practices at 1000 Greenley Rd, Sonora, CA 95370. Dr. Stone's primary practice is Adventist Health Sonora in Sonora, California. Dmand AI also links Dr. Stone to 1 group practice or clinic.
What is Dr. William G. Stone's office phone number?
The practice phone on file for Dr. Stone is (209) 536-5000.
What is Dr. William G. Stone's medical license number?
Dr. Stone's California license number on file is C167208, one of the licenses on file in 4 states.
Which states has Dr. William G. Stone been licensed in?
Dmand AI has state licenses on file for Dr. Stone in California (2019 to 2025), South Dakota, Colorado (2021 to 2024) and Michigan (2007 to 2012).
What medical group is Dr. William G. Stone part of?
Dr. Stone is linked to Surgical Solutions LLC.
Does Dr. William G. Stone accept Medicare?
Yes. CMS data shows Dr. Stone billed Medicare for 157 services in 2024.
What is Dr. William G. Stone's MIPS score?
Dr. Stone's MIPS final score for performance year 2024 is 86 out of 100, reported as part of a group.
How many Medicare patients does Dr. William G. Stone see?
CMS counts 109 Medicare patients who saw Dr. Stone in 2024, with an average age of 74.
Show 7 more questionsShow fewer questions
Is Dr. William G. Stone board certified?
Yes. Dr. Stone is board certified in surgery by the American Board of Surgery.
What services does Dr. William G. Stone bill to Medicare?
In 2024, Dr. Stone's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99223) and hospital inpatient care (99222).
Where did Dr. William G. Stone go to medical school?
Dr. Stone graduated from Sanford School of Medicine in 2007.
What drugs does Dr. William G. Stone prescribe most?
In 2022 Medicare Part D data, Dr. Stone's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
Has Dr. William G. Stone received payments from drug or device companies?
CMS Open Payments shows $431 in general payments to Dr. Stone from 17 companies from 2016 to 2024. The largest total came from MDD US Operations, LLC.
How long has Dr. William G. Stone been practicing?
Dr. Stone graduated from medical school in 2007, 19 years ago.
What insurance does Dr. William G. Stone accept?
Dr. Stone is in network with 7 carriers, including United Healthcare, Blue Cross Blue Shield of North Dakota and Medica. HMO plans come from the most carriers, 4. Check the plan with the practice before a visit.
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