Dr. William M. Mundy, MD
- Medicare services, 2024
- 1,362
- Medicare patients, 2024
- 484
- Part D claims, 2024
- 746
- MIPS score, 2024
- 82
- Hospital affiliations
- 2
- Practice address
- 250 Bon Air Road, Greenbrae, CA 94904
- Practice phone
- Call (415) 925-7900
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Mundy'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 M. Mundy is a hospitalist in Greenbrae, California
Dr. Mundy practices at MarinHealth Medical Center in Greenbrae, California, part of Marin Healthcare District.
Dr. Mundy's NPI, 1336341825, was assigned on June 5, 2007. Dr. Mundy graduated from University of Toledo College of Medicine and Life Sciences in 1999. Dr. Mundy holds California license A105911.
- NPI
- 1336341825NPI Registry (opens in a new tab)
- Medicare PAC ID
- 3375641368
- NPI enumeration date
- June 5, 2007
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (415) 925-7900
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 53
- Medical school graduation
- 1999
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William M. Mundy practices at MarinHealth Medical Center in Greenbrae, California
Dr. Mundy's primary practice is MarinHealth Medical Center, at 250 Bon Air Road, Greenbrae, CA 94904 in Marin County. The practice phone is (415) 925-7900.
- MarinHealth Medical Center250 Bon Air Road, Greenbrae, CA 94904 · Marin CountyPhone(415) 925-7900
Source: Dmand AI Affiliation Data
Dr. William M. Mundy is affiliated with 2 sites of care and 3 medical groups
Dr. Mundy's primary practice is MarinHealth Medical Center in Greenbrae, California, part of Marin Healthcare District. Dr. Mundy is also affiliated with Sutter Lakeside Hospital. The medical group on file is Vituity. Dmand AI also links Dr. Mundy to 2 more medical groups, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William M. Mundy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Mundy practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| MarinHealth Medical Center | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Marin Healthcare District and 6.2K+ hospitals, with verified contacts in the same login.
Dr. William M. Mundy is one of 3,186 hospitalists in California
Hospitalist is Dr. Mundy's primary specialty in the NPI Registry, under taxonomy code 208M00000X. Dr. Mundy is board certified in family medicine by the American Board of Family Medicine. Dmand AI has Dr. Mundy's licenses on file in 4 states: California, Oregon, Ohio and Hawaii.
Specialties and state licenses
- Hospitalist, CaliforniaPrimary
- Oregon license
- Ohio license
- Hawaii license
Clinical focus
Dmand AI lists acute diabetes, acute respiratory failure, cardiac arrhythmia, cellulitis, chronic hypertension, circulation problems, circulatory problems in extremities and congestive heart failure among the conditions Dr. Mundy treats.
Hospitalists near Dr. Mundy
Counts of hospitalists 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 M. Mundy billed Medicare for 1,362 services in 2024
CMS data shows 1,362 Medicare services from Dr. Mundy across 6 procedure codes in 2024, for 484 Medicare patients. Medicare paid $125,522 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Mundy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 4192024: 1,362225%
Dr. Mundy compared with the California median for hospitalists, 2024
- Dr. Mundy
- California median
- Medicare services
- 1,362vs 4303.2 times
- Medicare patients
- 484vs 2012.4 times
- Part D claims
- 390vs 695.7 times
Medians across 2,991 hospitalists in California with Dmand AI profiles that report each measure.
Dr. Mundy'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.
Need commercial claims for Dr. Mundy?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Mundy and other hospitalists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William M. Mundy treated 484 Medicare patients in 2024, average age 79
CMS counts 484 Medicare patients who saw Dr. Mundy in 2024. The largest group is 75 to 84, with 170 patients. 75% of them have high blood pressure, and 75% have high cholesterol. 31% are also on Medicaid. Their average risk score is 1.93, where 1.00 is the Medicare average, so they are sicker than most Medicare patients.
Across all payers, Dmand AI patient panel data puts Dr. Mundy's median patient age at 72, with 48% women.
Dr. Mundy's Medicare patients by age, 2024
Dr. Mundy's Medicare patients by sex, 2024
- Women23849%
- Men24651%
Chronic conditions among Dr. Mundy's Medicare patients, 2024
- High blood pressure75%
- High cholesterol75%
- Arthritis56%
- Chronic kidney disease48%
- Ischemic heart disease45%
- Mood disorders45%
- Anxiety39%
- Depression39%
Share of Medicare patients with each condition. A patient can have several.
Dr. Mundy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women48%
- Men51%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William M. Mundy wrote 746 Medicare Part D claims in 2024
In 2024, Dr. Mundy wrote 746 Medicare Part D claims for 200 patients. 89% of them were for generic drugs. CMS names the drug for 390 of them, across 16 drugs with 11 or more claims each, at $13,959 in total drug cost. In 2023, CMS named 351 claims across 17 drugs.
Dr. Mundy's Part D claims by kind of drug, 2024
- Generic661 claims89%
- Brand-name85 claims11%
Dr. Mundy's most prescribed drugs by claims, 2024
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Drug classes CMS tracks in Dr. Mundy's Part D claims, 2024
- Opioids4%28 of 746 claims
- Antibiotics15%114 of 746 claims
- Antipsychotics, patients 65 and over2%12 of 746 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 3512024: 39011%
Drugs named by CMS: 16 in 2024, 17 in 2023.
Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data
Dr. William M. Mundy scored 82 out of 100 in Medicare's MIPS program for 2024
CMS publishes a Merit-based Incentive Payment System (MIPS) score of 82 out of 100 for Dr. Mundy for performance year 2024, reported as part of a group. Dr. Mundy accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Dr. Mundy's MIPS scores, performance year 2024
- 82of 100Final score
- 65.6of 100Quality
- 40of 100Improvement Activities
- 71of 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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. William M. Mundy received $42 in industry payments from 2016 to 2017
CMS Open Payments shows 3 general payments to Dr. Mundy from 2 drug and device companies from 2016 to 2017. Food and beverage make up the largest share, 100% of the total. Allergan Inc. paid the most, $27.
General payments to Dr. Mundy by program year, 2016 to 2017
Companies that paid Dr. Mundy the most, 2016 to 2017
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William M. Mundy graduated from University of Toledo College of Medicine and Life Sciences
Dr. Mundy graduated from University of Toledo College of Medicine and Life Sciences in 1999.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. William M. Mundy accepts plans from 1 insurance carrier
Dr. Mundy is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- CMS Medicare
Source: Dmand AI Insurance Network Data
Sources for Dr. William M. Mundy'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 DataMedicare 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)Medicare Part D Prescribers - 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) |
| 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 M. Mundy
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 M. Mundy's NPI number?
Dr. William M. Mundy's NPI number is 1336341825. It was assigned on June 5, 2007, and it is active in the NPI Registry.
What kind of doctor is Dr. William M. Mundy?
Dr. William M. Mundy is a hospitalist in Greenbrae, California. The primary specialty in the NPI Registry is Hospitalist Physician (taxonomy code 208M00000X).
Where does Dr. William M. Mundy practice?
Dr. Mundy practices at 250 Bon Air Road, Greenbrae, CA 94904. Dr. Mundy's primary practice is MarinHealth Medical Center in Greenbrae, California, part of Marin Healthcare District. Dmand AI also links Dr. Mundy to 2 medical groups.
What is Dr. William M. Mundy's office phone number?
The practice phone on file for Dr. Mundy is (415) 925-7900.
What is Dr. William M. Mundy's medical license number?
Dr. Mundy holds California license A105911, one of the licenses on file in 4 states.
Which states has Dr. William M. Mundy been licensed in?
Dmand AI has state licenses on file for Dr. Mundy in California (2008 to 2026), Oregon (2022 to 2025), Ohio (2004 to 2022) and Hawaii (2008 to 2016).
Which hospitals is Dr. William M. Mundy affiliated with?
Dr. Mundy practices at MarinHealth Medical Center in Greenbrae, California. Dr. Mundy is also affiliated with Sutter Lakeside Hospital.
What medical group is Dr. William M. Mundy part of?
Dr. Mundy is linked to Vituity. Dmand AI links Dr. Mundy to 2 more medical groups.
Does Dr. William M. Mundy accept Medicare?
Yes. CMS data shows Dr. Mundy billed Medicare for 1,362 services in 2024, and Dr. Mundy accepts Medicare assignment.
What is Dr. William M. Mundy's MIPS score?
Dr. Mundy's MIPS final score for performance year 2024 is 82 out of 100, reported as part of a group.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. William M. Mundy see?
CMS counts 484 Medicare patients who saw Dr. Mundy in 2024, with an average age of 79.
Is Dr. William M. Mundy board certified?
Yes. Dr. Mundy is board certified in family medicine by the American Board of Family Medicine.
What services does Dr. William M. Mundy bill to Medicare?
In 2024, Dr. Mundy's most billed Medicare services were hospital inpatient care (99232), hospital inpatient care (99233) and hospital inpatient care (99239).
Where did Dr. William M. Mundy go to medical school?
Dr. Mundy graduated from University of Toledo College of Medicine and Life Sciences in 1999.
What drugs does Dr. William M. Mundy prescribe most?
In 2024 Medicare Part D data, Dr. Mundy's most prescribed drugs by claims were Atorvastatin Calcium, Metoprolol Succinate and Amlodipine Besylate.
Has Dr. William M. Mundy received payments from drug or device companies?
CMS Open Payments shows $42 in general payments to Dr. Mundy from 2 companies from 2016 to 2017. The largest total came from Allergan Inc.
How long has Dr. William M. Mundy been practicing?
Dr. Mundy graduated from medical school in 1999, 27 years ago.
What insurance does Dr. William M. Mundy accept?
Dr. Mundy is in network with 1 carrier, including CMS Medicare. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
Selling to hospitalist practices?
See hospitalists in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card