Dr. Robert Sean Doomun, DO

  • Orange, CA
  • Family medicine physician
NPI1043221898PAC ID3870502297
Medicare services, 2024
565
Medicare patients, 2024
248
Part D claims, 2024
2,662
Hospital affiliations
1
Medical groups
3
Practice address
101 City Drive South, Orange, CA 92868
Practice phone
Call (714) 456-7890
Professional email
Get professional email
Personal email
Get personal email
Mobile number
Get mobile number
Social profiles

Primary practice

UCI Health - Orange

Hospital · Orange, California

See all 9 affiliations

Find Dr. Doomun'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.

View contacts for free

Dr. Robert Sean Doomun is a family medicine physician in Orange, California

Dr. Doomun practices at UCI Health - Orange in Orange, California, part of UC Irvine.

Dr. Doomun's NPI, 1043221898, was assigned on August 10, 2006. Dr. Doomun graduated from WesternU College of Osteopathic Medicine of the Pacific in 1998. Dr. Doomun holds California license 20A7459.

NPI and contact details
Medicare PAC ID
3870502297
NPI enumeration date
August 10, 2006
NPI status
Active
Accepts Medicare assignment
Yes
Offers telehealth
Yes
Practice phone
(714) 456-7890
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. Robert Sean Doomun practices at UCI Health - Orange in Orange, California

Dr. Doomun's primary practice is UCI Health - Orange, at 101 City Drive South, Orange, CA 92868 in Orange County. The practice phone is (714) 456-7890.

  • UCI Health - Orange
    101 City Drive South, Orange, CA 92868 · Orange CountyPhone(714) 456-7890

Source: Dmand AI Affiliation Data

Dr. Robert Sean Doomun is affiliated with 6 sites of care and 3 medical groups

Dr. Doomun's primary practice is UCI Health - Orange in Orange, California, part of UC Irvine. The medical group on file is MemorialCare Medical Group. Dmand AI also links Dr. Doomun to 3 more group practices and clinics, 2 medical groups, 1 physician office and 1 home health agency, each named with a free account.

See all 9 affiliations for Dr. Doomun

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Dr. Robert Sean Doomun's practice

Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Doomun practices, 6 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
UCI Health - OrangeAvailable with a free account
+5 more sites and 2 medical groupsAvailable with a free account

Source: Dmand AI Technology Install Data

For health IT teams

See the EHR and IT leaders at every hospital where Dr. Doomun practices

Dmand AI maps EHR vendors, IT decision makers and buying committees across UC Irvine and 6.2K+ hospitals, with verified contacts in the same login.

Dr. Robert Sean Doomun is one of 15,680 family medicine physicians in California

Family medicine is Dr. Doomun's primary specialty in the NPI Registry, under taxonomy code 207Q00000X. Dr. Doomun is board certified in family practice and osteopathic manipulative medicine by the AOA Board of Family Physicians. Dr. Doomun is licensed in California.

Specialties and state licenses

  • Family medicine, CaliforniaPrimaryLicense 20A7459 · 1999 to 2026 · taxonomy 207Q00000X

Clinical focus

Dmand AI lists acid reflux, acute skin infection, aneurysm, aortic atherosclerois, arteritis, asthma, atrial fibrillation and flutter and chronic diabetes among the conditions Dr. Doomun treats.

Family medicine physicians near Dr. Doomun

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. Robert Sean Doomun billed Medicare for 565 services in 2024

CMS data shows 565 Medicare services from Dr. Doomun across 7 procedure codes in 2024, for 248 Medicare patients. Medicare paid $38,860 for them. Every service was in an office.

Medicare services, 2024565
Medicare patients248
Paid by Medicare$38,860
Procedure codes7

Dr. Doomun's Medicare services by type, 2023 to 2024

  • 2023
  • 2024
Office and hospital visits
2023: 4192024: 50521%
Other services
2023: 182024: 46156%
Tests and treatments
2023: 182024: 1422%

Dr. Doomun compared with the California median for family medicine physicians, 2024

  • Dr. Doomun
  • California median
Medicare services
565vs 2462.3 times
Medicare patients
248vs 1182.1 times
Part D claims
2,238vs 8332.7 times

Medians across 15,349 family medicine physicians in California with Dmand AI profiles that report each measure.

Dr. Doomun'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.

See all procedures by Dr. Doomun

Need commercial claims for Dr. Doomun?

Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Doomun and other family medicine physicians in California.

Book a meeting

Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Dr. Robert Sean Doomun treated 248 Medicare patients in 2024, average age 73

CMS counts 248 Medicare patients who saw Dr. Doomun in 2024. The largest group is 65 to 74, with 138 patients. 70% of them have high cholesterol, and 67% have high blood pressure. 9% are also on Medicaid. Their average risk score is 1.17, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Dr. Doomun's median patient age at 56, with 38% women.

Medicare patients, 2024248
Average age73
Average risk score1.17
Also on Medicaid9%

Dr. Doomun's Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Dr. Doomun's Medicare patients by sex, 2024

  • Women9739%
  • Men15161%

Chronic conditions among Dr. Doomun's Medicare patients, 2024

  1. High cholesterol70%
  2. High blood pressure67%
  3. Arthritis49%
  4. Cancer23%
  5. Chronic kidney disease21%
  6. Diabetes21%
  7. Ischemic heart disease19%
  8. Mood disorders19%

Share of Medicare patients with each condition. A patient can have several.

Dr. Doomun's patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 56

Patient panel by sex, all payers

  • Women38%
  • Men60%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Dr. Robert Sean Doomun wrote 2,662 Medicare Part D claims in 2024

In 2024, Dr. Doomun wrote 2,662 Medicare Part D claims for 333 patients. 92% of them were for generic drugs. CMS names the drug for 2,238 of them, across 68 drugs with 11 or more claims each, at $69,931 in total drug cost. In 2023, CMS named 1,686 claims across 54 drugs.

Part D claims, 20242,662
Drugs named by CMS68
Total drug cost$69,931
Part D patients333

Dr. Doomun's Part D claims by kind of drug, 2024

  • Generic2,453 claims92%
  • Brand-name and other209 claims8%

Dr. Doomun'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. Doomun's Part D claims, 2024

  • Opioids2%66 of 2,662 claims
  • Antibiotics2%59 of 2,662 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: 1,6862024: 2,23833%

Drugs named by CMS: 68 in 2024, 54 in 2023.

See all prescribing by Dr. Doomun

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. Robert Sean Doomun offers telehealth to Medicare patients

Dr. Doomun accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Doomun as offering telehealth.

Accepts Medicare assignment
Yes
Offers telehealth
Yes

Removal of skin lesions: 1 to 10 procedures (CMS shows small counts as a range)

Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)

For MedTech and pharma teams

Find family medicine physicians like Dr. Doomun by procedure volume and prescribing

Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.

Dr. Robert Sean Doomun graduated from WesternU College of Osteopathic Medicine of the Pacific

Dr. Doomun graduated from WesternU College of Osteopathic Medicine of the Pacific in 1998. Dr. Doomun is a member of AOA.

  1. Medical schoolWesternU College of Osteopathic Medicine of the Pacific
  2. Board certified in family practice and osteopathic manipulative medicineAOA Board of Family Physicians

Source: Dmand AI Professional Profile Data

Dr. Robert Sean Doomun accepts plans from 11 insurance carriers

Dr. Doomun is in network with 11 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

  • Aetna
  • Elevance
  • Blue Cross Blue Shield of Michigan
  • United Healthcare
  • HCSC
  • Blue Cross Blue Shield of Massachusetts
  • Regence Health Plans
  • Alliant Health Plans
  • +3 more carriersWith a free account

Plan types Dr. Doomun accepts, by number of carriers

  1. Medicare8
  2. PPO7
  3. HMO6
  4. POS5
  5. EPO3

Source: Dmand AI Insurance Network Data

Sources for Dr. Robert Sean Doomun's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare 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 percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab)
Training, board certification and membershipsDmand AI Professional Profile Data
Insurance carriers and plan typesDmand AI Insurance Network Data
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Dr. Robert Sean Doomun

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. Robert Sean Doomun's NPI number?

Dr. Robert Sean Doomun's NPI number is 1043221898. It was assigned on August 10, 2006, and it is active in the NPI Registry.

What kind of doctor is Dr. Robert Sean Doomun?

Dr. Robert Sean Doomun is a family medicine physician in Orange, California. The primary specialty in the NPI Registry is Family Medicine Physician (taxonomy code 207Q00000X).

Where does Dr. Robert Sean Doomun practice?

Dr. Doomun practices at 101 City Drive South, Orange, CA 92868. Dr. Doomun's primary practice is UCI Health - Orange in Orange, California, part of UC Irvine. Dmand AI also links Dr. Doomun to 3 group practices and clinics, 2 medical groups, 1 physician office and 1 home health agency.

What is Dr. Robert Sean Doomun's office phone number?

The practice phone on file for Dr. Doomun is (714) 456-7890.

What is Dr. Robert Sean Doomun's medical license number?

Dr. Doomun holds California license 20A7459.

Which hospitals is Dr. Robert Sean Doomun affiliated with?

Dr. Doomun practices at UCI Health - Orange in Orange, California.

What medical group is Dr. Robert Sean Doomun part of?

Dr. Doomun is linked to MemorialCare Medical Group. Dmand AI links Dr. Doomun to 2 more medical groups.

Does Dr. Robert Sean Doomun accept Medicare?

Yes. CMS data shows Dr. Doomun billed Medicare for 565 services in 2024, and Dr. Doomun accepts Medicare assignment.

Does Dr. Robert Sean Doomun offer telehealth?

Yes. The CMS Doctors and Clinicians file lists Dr. Doomun as offering telehealth services.

How many Medicare patients does Dr. Robert Sean Doomun see?

CMS counts 248 Medicare patients who saw Dr. Doomun in 2024, with an average age of 73.

Show 6 more questionsShow fewer questions

Is Dr. Robert Sean Doomun board certified?

Yes. Dr. Doomun is board certified in family practice and osteopathic manipulative medicine by the AOA Board of Family Physicians.

What services does Dr. Robert Sean Doomun bill to Medicare?

In 2024, Dr. Doomun's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99213) and office visit, established patient (99215).

Where did Dr. Robert Sean Doomun go to medical school?

Dr. Doomun graduated from WesternU College of Osteopathic Medicine of the Pacific in 1998.

What drugs does Dr. Robert Sean Doomun prescribe most?

In 2024 Medicare Part D data, Dr. Doomun's most prescribed drugs by claims were Atorvastatin Calcium, Levothyroxine Sodium and Amlodipine Besylate.

How long has Dr. Robert Sean Doomun been practicing?

Dr. Doomun graduated from medical school in 1998, 28 years ago.

What insurance does Dr. Robert Sean Doomun accept?

Dr. Doomun is in network with 11 carriers, including Aetna, Elevance and Blue Cross Blue Shield of Michigan. Medicare plans come from the most carriers, 8. Check the plan with the practice before a visit.

Selling to family medicine practices?

See family medicine physicians 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

Cookie settings

Turn each category on or off. Your choice is kept for 12 months and you can change it here at any time.

Necessary

Always on. Sign-in, security, downloads you asked for, your cookie choice, and the page that led to a signup.

View cookies (6)
  • dm_consentDmand AI. Your cookie choices and whether your browser sent a Global Privacy Control signal. 12 months.
  • dm_ft, dm_ltDmand AI. The first and the latest page you arrived on, with the date, so a signup is credited to the page that worked. 90 days, 30 days.
  • dm_fs, dm_lsDmand AI. The first and the latest source of a visit (a search engine, a campaign or the site that linked here). 90 days, 30 days.
  • dm_dl, dm_dl_okDmand AI. After you give an email address for a download, lets you download files without being asked again. 30 days.
  • Session and CSRF cookiesDmand AI (app.dmand.ai). Sign-in and form protection in the application. Session.
  • __cf_bm, cf_clearanceCloudflare. Tells people from automated traffic and keeps the site available. 30 minutes; cf_clearance while a security check is valid.

Analytics

On unless you turn it off. How pages are used, in aggregate, and recordings of how pages are used.

View cookies (6)
  • Google Tag ManagerGoogle. Loads the analytics and marketing tags that are on. Sets no cookie of its own and does not load when both categories are off. n/a.
  • _ga, _ga_<container-id>Google Analytics 4. Visits and page views in aggregate on dmand.ai. 2 years.
  • _clck, _clskMicrosoft Clarity. Recordings and heatmaps of how pages are used, with form fields masked. 1 year, 1 day.
  • CLID, MUID, ANONCHK, MR, SMMicrosoft (clarity.ms). Set by Microsoft when Clarity loads, to recognize a browser across sites that use Clarity. Up to 1 year.
  • None (cookieless)Ahrefs Analytics. Page views in aggregate. n/a.
  • ph_<project>_posthogPostHog. Product usage, errors and performance in app.dmand.ai, used to fix bugs and improve features. 365 days.

Marketing

On unless you turn it off, and always off when your browser sends a Global Privacy Control signal. A visitor identification service tells our sales team which companies and people visit.

View cookies (6)
  • _reb2buid, _reb2butkRB2B. Recognizes a returning browser for visitor identification. 360 days, 1 year.
  • _reb2bgeoRB2B. The location used to decide whether a visit can be identified. 20 days.
  • _reb2brefRB2B. The page or site that referred the visit. 15 days.
  • _reb2bfxf, _reb2btd, _reb2bliRB2B. Links the visit to an identified business profile. 1 month.
  • _reb2bresolveRB2B. Holds a match while it is being resolved. 2 days.
  • _reb2sessionID, _reb2bloadedRB2B. The current visit, and a guard against loading the script twice. 30 minutes, 1 second.

Functional

On unless you turn it off. Remembers choices such as a collapsed section.

View cookies (none today)