Dr. William Aaron Markoff, MD
- Medicare services, 2024
- 2,991
- Medicare patients, 2024
- 629
- Part D claims, 2024
- 8,605
- Hospital affiliations
- 3
- Industry payments
- $594
- Practice address
- 200 W Center Street Promenade, Anaheim, CA 92805
- Practice phone
- Call (657) 640-8090
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Providence at Home With Compassus Home Health Orange County
Home Health Agency - Main Office · Anaheim, California
Find Dr. Markoff'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 Aaron Markoff is a family medicine physician in Anaheim, California
Dr. Markoff practices at Providence at Home With Compassus Home Health Orange County in Anaheim, California.
Dr. Markoff's NPI, 1407869167, was assigned on August 14, 2006. Dr. Markoff graduated from SUNY Upstate Medical University in 1998. Dr. Markoff holds California license A74621.
- NPI
- 1407869167NPI Registry (opens in a new tab)
- Medicare PAC ID
- 4789757840
- NPI enumeration date
- August 14, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (657) 640-8090
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 54
- Medical school graduation
- 1998
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. William Aaron Markoff practices at Providence at Home With Compassus Home Health Orange County in Anaheim, California
Dr. Markoff's primary practice is Providence at Home With Compassus Home Health Orange County, at 200 W Center Street Promenade, Anaheim, CA 92805. The practice phone is (657) 640-8090.
- Providence at Home With Compassus Home Health Orange County200 W Center Street Promenade, Anaheim, CA 92805Phone(657) 640-8090
Source: Dmand AI Affiliation Data
Dr. William Aaron Markoff is affiliated with 12 sites of care and 2 medical groups
Dr. Markoff's primary practice is Providence at Home With Compassus Home Health Orange County in Anaheim, California. Dr. Markoff is also affiliated with Providence Santa Rosa Memorial Hospital. The medical group on file is St. Jude Heritage Medical Group. Dmand AI also links Dr. Markoff to 2 more hospitals, 5 home health agencies, 2 group practices and clinics, 1 hospice and 1 medical group, each named with a free account. Dr. Markoff's employer is on file too: a home health agency.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. William Aaron Markoff's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Markoff practices, 12 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Providence at Home With Compassus Home Health Orange County | Available with a free account |
| +11 more sites and 1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. William Aaron Markoff is one of 15,680 family medicine physicians in California
Family medicine is Dr. Markoff's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Markoff is board certified in family medicine by the American Board of Family Medicine. Dmand AI has Dr. Markoff's licenses on file in 2 states: California and Indiana.
Specialties and state licenses
- Family medicine, CaliforniaPrimary
- Indiana license
Clinical focus
Dmand AI lists acid reflux, acute gastroduodenitis, acute sinusitis, acute skin infection, adjustment disease, alcohol use disorders, alzheimer's disease and aneurysm among the conditions Dr. Markoff treats.
Family medicine physicians near Dr. Markoff
Counts of family medicine physicians 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 Aaron Markoff billed Medicare for 2,991 services in 2024
CMS data shows 2,991 Medicare services from Dr. Markoff across 13 procedure codes in 2024, for 629 Medicare patients. Medicare paid $211,220 for them. Every service was in an office.
Dr. Markoff's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 1,4292024: 1,4042%
- Other services
- 2023: 4452024: 1,385211%
- Tests and treatments
- 2023: 1252024: 15222%
- Lab and pathology
- 2023: 162024: 50213%
- Surgery
- 2023: 372024: 0100%
Dr. Markoff compared with the California median for family medicine physicians, 2024
- Dr. Markoff
- California median
- Medicare services
- 2,991vs 24612.2 times
- Medicare patients
- 629vs 1185.3 times
- Part D claims
- 7,950vs 8339.5 times
Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Markoff'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. Markoff and other family medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. William Aaron Markoff treated 629 Medicare patients in 2024, average age 76
CMS counts 629 Medicare patients who saw Dr. Markoff in 2024. The largest group is 75 to 84, with 270 patients. 75% of them have high cholesterol, and 63% have high blood pressure. 3% are also on Medicaid. Their average risk score is 1.03, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Markoff's median patient age at 73, with 50% women.
Dr. Markoff's Medicare patients by age, 2024
Dr. Markoff's Medicare patients by sex, 2024
- Women30849%
- Men32151%
Chronic conditions among Dr. Markoff's Medicare patients, 2024
- High cholesterol75%
- High blood pressure63%
- Arthritis39%
- Ischemic heart disease28%
- Mood disorders22%
- Anxiety19%
- Depression19%
- Atrial fibrillation18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Markoff's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 73
Patient panel by sex, all payers
- Women50%
- Men49%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. William Aaron Markoff wrote 8,605 Medicare Part D claims in 2024
In 2024, Dr. Markoff wrote 8,605 Medicare Part D claims for 812 patients. 91% of them were for generic drugs. CMS names the drug for 7,950 of them, across 115 drugs with 11 or more claims each, at $367,410 in total drug cost. In 2023, CMS named 7,854 claims across 114 drugs.
Dr. Markoff's Part D claims by kind of drug, 2024
- Generic7,856 claims91%
- Brand-name735 claims9%
- Other14 claims0%
Dr. Markoff'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. Markoff's Part D claims, 2024
- Opioids2%162 of 8,605 claims
- Antibiotics2%187 of 8,605 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: 7,8542024: 7,9501%
Drugs named by CMS: 115 in 2024, 114 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 Aaron Markoff ranks in the 64th percentile for removal of skin lesions in Medicare
Dr. Markoff accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Markoff as offering telehealth. CMS counts 19 procedures of removal of skin lesions by Dr. Markoff, more than 64% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Where Dr. Markoff ranks in Medicare procedure volume
- Removal of skin lesions
- 64th percentile19 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. William Aaron Markoff received $594 in industry payments from 2016 to 2024
CMS Open Payments shows 16 general payments to Dr. Markoff from 6 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 66% of the total. Janssen Pharmaceuticals, Inc paid the most, $289.
General payments to Dr. Markoff by program year, 2016 to 2024
General payments to Dr. Markoff by kind, 2016 to 2024
- Food and beverage$39166%
- Education$11720%
- Speaker and faculty fees$559%
- Consulting fees$305%
Companies that paid Dr. Markoff 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 Aaron Markoff graduated from SUNY Upstate Medical University
Dr. Markoff graduated from SUNY Upstate Medical University in 1998.
- Medical school
- Board certified in family medicine
Source: Dmand AI Professional Profile Data
Dr. William Aaron Markoff accepts plans from 11 insurance carriers
Dr. Markoff is in network with 11 carriers, including Aetna, Elevance and United Healthcare. HMO plans come from the most carriers, 6. Check the plan with the practice before a visit.
- Aetna
- Elevance
- United Healthcare
- HCSC
- Regence Health Plans
- Alliant Health Plans
- Blue Cross and Blue Shield of Kansas City
- Blue Cross Blue Shield of Michigan
- +3 more carriersWith a free account
Plan types Dr. Markoff accepts, by number of carriers
- HMO6
- Medicare6
- PPO6
- EPO4
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. William Aaron Markoff'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)Doctors and Clinicians Utilization Data (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 Aaron Markoff
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 Aaron Markoff's NPI number?
Dr. William Aaron Markoff's NPI number is 1407869167. It was assigned on August 14, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. William Aaron Markoff?
Dr. William Aaron Markoff is a family medicine physician in Anaheim, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).
Where does Dr. William Aaron Markoff practice?
Dr. Markoff practices at 200 W Center Street Promenade, Anaheim, CA 92805. Dr. Markoff's primary practice is Providence at Home With Compassus Home Health Orange County in Anaheim, California. Dmand AI also links Dr. Markoff to 2 hospitals, 5 home health agencies, 2 group practices and clinics, 1 hospice and 1 medical group.
What is Dr. William Aaron Markoff's office phone number?
The practice phone on file for Dr. Markoff is (657) 640-8090.
What is Dr. William Aaron Markoff's medical license number?
Dr. Markoff holds California license A74621, one of the licenses on file in 2 states.
Which states has Dr. William Aaron Markoff been licensed in?
Dmand AI has state licenses on file for Dr. Markoff in California (2001 to 2027) and Indiana (1999 to 2025).
Which hospitals is Dr. William Aaron Markoff affiliated with?
Dr. Markoff is affiliated with Providence Santa Rosa Memorial Hospital. Dmand AI links Dr. Markoff to 2 more hospitals.
What medical group is Dr. William Aaron Markoff part of?
Dr. Markoff is linked to St. Jude Heritage Medical Group. Dmand AI links Dr. Markoff to 1 more medical group.
Does Dr. William Aaron Markoff accept Medicare?
Yes. CMS data shows Dr. Markoff billed Medicare for 2,991 services in 2024, and Dr. Markoff accepts Medicare assignment.
Does Dr. William Aaron Markoff offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Markoff as offering telehealth services.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. William Aaron Markoff see?
CMS counts 629 Medicare patients who saw Dr. Markoff in 2024, with an average age of 76.
Is Dr. William Aaron Markoff board certified?
Yes. Dr. Markoff is board certified in family medicine by the American Board of Family Medicine.
What services does Dr. William Aaron Markoff bill to Medicare?
In 2024, Dr. Markoff's most billed Medicare services were office visit, established patient (99214), medicare service (G2211) and medicare service (G0439).
Where did Dr. William Aaron Markoff go to medical school?
Dr. Markoff graduated from SUNY Upstate Medical University in 1998.
What drugs does Dr. William Aaron Markoff prescribe most?
In 2024 Medicare Part D data, Dr. Markoff's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Rosuvastatin Calcium.
Has Dr. William Aaron Markoff received payments from drug or device companies?
CMS Open Payments shows $594 in general payments to Dr. Markoff from 6 companies from 2016 to 2024. The largest total came from Janssen Pharmaceuticals, Inc.
How long has Dr. William Aaron Markoff been practicing?
Dr. Markoff graduated from medical school in 1998, 28 years ago.
What insurance does Dr. William Aaron Markoff accept?
Dr. Markoff is in network with 11 carriers, including Aetna, Elevance and United Healthcare. HMO plans come from the most carriers, 6. Check the plan with the practice before a visit.
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