Dr. William Arnold Combs, MD
- Medicare services, 2022
- 374
- Part D claims, 2020
- 27
- Industry payments
- $147
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 1701 4th St Ste 100 Suite 100, Santa Rosa, CA 95404-3661
- Practice phone
- Call (707) 573-6942
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Northern California Medical Assoc
Multi-specialty group site · Santa Rosa, California
Find Dr. Combs' 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 Arnold Combs is an otolaryngologist in Santa Rosa, California
Dr. Combs practices at Northern California Medical Assoc in Santa Rosa, California.
Dr. Combs' NPI, 1073687539, was assigned on November 17, 2006. Dr. Combs graduated from University of Colorado School of Medicine, Denver in 1969. Dr. Combs holds California license G20429.
- NPI
- 1073687539NPI Registry (opens in a new tab)
- NPI enumeration date
- November 17, 2006
- NPI status
- Active
- Practice phone
- (707) 573-6942
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 83
- Medical school graduation
- 1969
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Arnold Combs practices at 2 locations in Santa Rosa, California
Dr. Combs' primary practice is Northern California Medical Assoc, at 1701 4th St Ste 100 Suite 100, Santa Rosa, CA 95404-3661. The practice phone is (707) 573-6942. The NPI Registry lists Dr. Combs' practice address as 1165 Montgomery Dr, Santa Rosa, CA 95405.
- Northern California Medical AssocPrimary1701 4th St Ste 100 Suite 100, Santa Rosa, CA 95404-3661Phone(707) 573-6942
- NPI Registry address1165 Montgomery Dr, Santa Rosa, CA 95405 · Sonoma CountyPhone(707) 523-7025
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. William Arnold Combs is affiliated with 1 site of care and 1 medical group
Dr. Combs' primary practice is Northern California Medical Assoc in Santa Rosa, California. Dmand AI also links Dr. Combs to 1 medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. William Arnold Combs' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Combs practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Northern California Medical Assoc | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Arnold Combs is one of 1,107 otolaryngologists in California
Otolaryngology is Dr. Combs' primary specialty in the NPI Registry, under taxonomy code 207Y00000X. Dmand AI has Dr. Combs' licenses on file in 2 states: California and Washington.
Specialties and state licenses
- Otolaryngology, CaliforniaPrimary
- Otolaryngic allergy, Washington
Otolaryngologists near Dr. Combs
Counts of otolaryngologists 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 Arnold Combs billed Medicare for 374 services in 2022
CMS data shows 374 Medicare services from Dr. Combs across 9 procedure codes in 2022. Medicare paid $22,621 for them. Every service was in an office.
Dr. Combs' Medicare services by type, 2022
- Office and hospital visits208
- Tests and treatments95
- Surgery71
Dr. Combs compared with the California median for otolaryngologists, 2022
- Dr. Combs
- California median
- Medicare services
- 374vs 66644% below
- Part D claims
- 27vs 11877% below
Medians across 1,045 otolaryngologists in California with Dmand AI profiles that report each measure.
Dr. Combs' most billed Medicare procedure codes, 2022
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. Combs?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Combs and other otolaryngologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Arnold Combs' patients have a median age of 48
Across all payers, Dmand AI patient panel data puts Dr. Combs' median patient age at 48, with 46% women.
Dr. Combs' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 48
Patient panel by sex, all payers
- Women46%
- Men54%
Source: Dmand AI Patient Panel Data
Dr. William Arnold Combs wrote 27 Medicare Part D claims in 2020
In 2020, Dr. Combs wrote 27 Medicare Part D claims. Every claim was for a generic drug. They cover 1 drug, with $1,001 in total drug cost. In 2019, CMS named 23 claims across 1 drug.
Dr. Combs' 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: 232020: 2717%
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
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Dr. William Arnold Combs received $147 in industry payments from 2017 to 2022
CMS Open Payments shows 3 general payments to Dr. Combs from 3 drug and device companies from 2017 to 2022. Food and beverage make up the largest share, 100% of the total. Stryker Corporation paid the most, $84.
General payments to Dr. Combs by program year, 2017 to 2022
Companies that paid Dr. Combs the most, 2017 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. William Arnold Combs graduated from University of Colorado School of Medicine, Denver
Dr. Combs graduated from University of Colorado School of Medicine, Denver in 1969.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. William Arnold Combs'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile 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 Arnold Combs
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 Arnold Combs' NPI number?
Dr. William Arnold Combs' NPI number is 1073687539. It was assigned on November 17, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Arnold Combs?
Dr. William Arnold Combs is an otolaryngologist in Santa Rosa, California. The primary specialty in the NPI Registry is Otolaryngology Physician (taxonomy code 207Y00000X).
Where does Dr. William Arnold Combs practice?
Dr. Combs practices at 1701 4th St Ste 100 Suite 100, Santa Rosa, CA 95404-3661. Dr. Combs also practices at 1165 Montgomery Dr, Santa Rosa, CA 95405. Dr. Combs' primary practice is Northern California Medical Assoc in Santa Rosa, California. Dmand AI also links Dr. Combs to 1 medical group.
What is Dr. William Arnold Combs' office phone number?
The practice phone on file for Dr. Combs is (707) 573-6942.
What is Dr. William Arnold Combs' medical license number?
Dr. Combs holds California license G20429, one of the licenses on file in 2 states.
Which states has Dr. William Arnold Combs been licensed in?
Dmand AI has state licenses on file for Dr. Combs in California and Washington.
Does Dr. William Arnold Combs accept Medicare?
Yes. CMS data shows Dr. Combs billed Medicare for 374 services in 2022.
What services does Dr. William Arnold Combs bill to Medicare?
In 2022, Dr. Combs' most billed Medicare services were office visit, new patient (99203), office visit, established patient (99213) and surgery: ear (69210).
Where did Dr. William Arnold Combs go to medical school?
Dr. Combs graduated from University of Colorado School of Medicine, Denver in 1969.
What drugs does Dr. William Arnold Combs prescribe most?
In 2020 Medicare Part D data, Dr. Combs' most prescribed drugs by claims were Azelastine HCl.
Has Dr. William Arnold Combs received payments from drug or device companies?
CMS Open Payments shows $147 in general payments to Dr. Combs from 3 companies from 2017 to 2022. The largest total came from Stryker Corporation.
How long has Dr. William Arnold Combs been practicing?
Dr. Combs graduated from medical school in 1969, 57 years ago.
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