Michael S. Oholleran
- Medicare services, 2019
- 305
- Part D claims, 2019
- 11
- Affiliated sites
- 1
- Medical groups
- 2
- State license
- 1
- Practice address
- 1303 San Carlos Ave, San Carlos, CA 94070-2317
- Practice phone
- Call (650) 593-0965
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Michael S Oholleran
Multi-specialty group site · San Carlos, California
Find Michael Oholleran'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.
Michael S. Oholleran is a general surgeon in Redwood City, California
Michael Oholleran practices at Michael S Oholleran in San Carlos, California.
Michael Oholleran's NPI, 1003916321, was assigned on September 25, 2006. Michael Oholleran graduated from UNMC in 1977. Michael Oholleran holds California license G394880.
- NPI
- 1003916321NPI Registry (opens in a new tab)
- NPI enumeration date
- September 25, 2006
- NPI status
- Active
- Practice phone
- (650) 593-0965
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1977
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Michael S. Oholleran practices in San Carlos and Redwood City
Michael Oholleran's primary practice is Michael S Oholleran, at 1303 San Carlos Ave, San Carlos, CA 94070-2317. The practice phone is (650) 593-0965. The NPI Registry lists Michael Oholleran's practice address as 290 Redwood Shores Pkwy, Redwood City, CA 94065-1173.
- Michael S OholleranPrimary1303 San Carlos Ave, San Carlos, CA 94070-2317Phone(650) 593-0965
- NPI Registry address290 Redwood Shores Pkwy, Redwood City, CA 94065-1173Phone(650) 853-2135
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Michael S. Oholleran is affiliated with 1 site of care and 2 medical groups
Michael Oholleran's primary practice is Michael S Oholleran in San Carlos, California. The medical group on file is UCSF Pediatrics. Dmand AI also links Michael Oholleran to 1 more 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 Michael S. Oholleran's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Michael Oholleran practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Michael S Oholleran | Available with a free account |
| +1 medical group | Available with a free account |
Source: Dmand AI Technology Install Data
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Michael S. Oholleran is one of 2,926 general surgeons in California
Surgery is Michael Oholleran's primary specialty in the NPI Registry, under taxonomy code 208600000X. Michael Oholleran is licensed in California.
Specialties and state licenses
- Surgery, CaliforniaPrimary
General surgeons near Michael Oholleran
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
Michael S. Oholleran billed Medicare for 305 services in 2019
CMS data shows 305 Medicare services from Michael Oholleran across 8 procedure codes in 2019. Medicare paid $27,599 for them.
Michael Oholleran's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 5792019: 29349%
- Surgery
- 2018: 572019: 1279%
Where Michael Oholleran's Medicare services took place, 2019
- In an office16052%
- In a facility14548%
Michael Oholleran compared with the California median for general surgeons, 2019
- Michael Oholleran
- California median
- Medicare services
- 305vs 16684% above
- Part D claims
- 11vs 3468% below
Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.
Michael Oholleran's most billed Medicare procedure codes, 2019
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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Michael S. Oholleran's patients have a median age of 73
Across all payers, Dmand AI patient panel data puts Michael Oholleran's median patient age at 73, with 33% women.
Michael Oholleran'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
- Women33%
- Men67%
Source: Dmand AI Patient Panel Data
Michael S. Oholleran wrote 11 Medicare Part D claims in 2019
In 2019, Michael Oholleran wrote 11 Medicare Part D claims. They cover 1 drug, with $101 in total drug cost. In 2018, CMS named 59 claims across 2 drugs.
Michael Oholleran's most prescribed drugs by claims, 2019
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, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 592019: 1181%
Drugs named by CMS: 1 in 2019, 2 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
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Michael S. Oholleran graduated from UNMC
Michael Oholleran graduated from UNMC in 1977.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Michael S. Oholleran'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) |
| 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 Michael S. Oholleran
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Michael S. Oholleran's NPI number?
Michael S. Oholleran's NPI number is 1003916321. It was assigned on September 25, 2006, and it is active in the NPI Registry.
What does Michael S. Oholleran specialize in?
Michael S. Oholleran is a general surgeon in Redwood City, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Michael S. Oholleran practice?
Michael Oholleran practices at 1303 San Carlos Ave, San Carlos, CA 94070-2317. Michael Oholleran also practices at 290 Redwood Shores Pkwy, Redwood City, CA 94065-1173. Michael Oholleran's primary practice is Michael S Oholleran in San Carlos, California. Dmand AI also links Michael Oholleran to 1 medical group.
What is Michael S. Oholleran's office phone number?
The practice phone on file for Michael Oholleran is (650) 593-0965.
What is Michael S. Oholleran's medical license number?
Michael Oholleran holds California license G394880.
What medical group is Michael S. Oholleran part of?
Michael Oholleran is linked to UCSF Pediatrics. Dmand AI links Michael Oholleran to 1 more medical group.
Does Michael S. Oholleran accept Medicare?
Yes. CMS data shows Michael Oholleran billed Medicare for 305 services in 2019.
What services does Michael S. Oholleran bill to Medicare?
In 2019, Michael Oholleran's most billed Medicare services were office visit, established patient (99213), hospital inpatient care (99232) and hospital inpatient care (99223).
Where did Michael S. Oholleran go to medical school?
Michael Oholleran graduated from UNMC in 1977.
What drugs does Michael S. Oholleran prescribe most?
In 2019 Medicare Part D data, Michael Oholleran's most prescribed drugs by claims were Hydrocodone-Acetaminophen.
How long has Michael S. Oholleran been practicing?
Michael Oholleran graduated from medical school in 1977, 49 years ago.
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