Dr. Darrell William Hayes, MD
- Medicare services, 2020
- 12
- Affiliated sites
- 1
- State license
- 1
- Year NPI issued
- 2005
- Practice locations
- 2
- Practice address
- 400 30th St Suite 400 Suite 400, Oakland, CA 94609
- Practice phone
- Call (510) 834-5484
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Darrell Hayes A Medical Corporation
Physician office · Oakland, California
Find Dr. Hayes' 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. Darrell William Hayes is an orthopedic surgeon in Castro Valley, California
Dr. Hayes practices at Darrell Hayes A Medical Corporation in Oakland, California.
Dr. Hayes' NPI, 1932194529, was assigned on September 20, 2005. Dr. Hayes graduated from Stanford University School Of Medicine in 1978. Dr. Hayes holds California license G40458.
- NPI
- 1932194529NPI Registry (opens in a new tab)
- NPI enumeration date
- September 20, 2005
- NPI status
- Active
- Practice phone
- (510) 834-5484
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Darrell William Hayes practices in Oakland and Castro Valley
Dr. Hayes' primary practice is Darrell Hayes A Medical Corporation, at 400 30th St Suite 400 Suite 400, Oakland, CA 94609. The practice phone is (510) 834-5484. The NPI Registry lists Dr. Hayes' practice address as 20103 Lake Chabot Rd, Castro Valley, CA 94546.
- Darrell Hayes A Medical CorporationPrimary400 30th St Suite 400 Suite 400, Oakland, CA 94609Phone(510) 834-5484
- NPI Registry address20103 Lake Chabot Rd, Castro Valley, CA 94546 · Alameda CountyPhone(510) 834-5484
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; and Dmand AI Practice Data
Dr. Darrell William Hayes is affiliated with 1 site of care
Dr. Hayes' primary practice is Darrell Hayes A Medical Corporation in Oakland, California.
Source: Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Darrell William Hayes' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hayes practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Darrell Hayes A Medical Corporation | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Darrell William Hayes is one of 2,056 orthopedic surgeons in California
Orthopaedic surgery is Dr. Hayes' primary specialty in the NPI Registry, under taxonomy code 207X00000X. Dr. Hayes is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery. Dr. Hayes is licensed in California.
Specialties and state licenses
- Orthopaedic surgery, CaliforniaPrimary
Orthopedic surgeons near Dr. Hayes
Counts of orthopedic 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
Dr. Darrell William Hayes billed Medicare for 12 services in 2020
CMS data shows 12 Medicare services from Dr. Hayes across 1 procedure code in 2020. Medicare paid $2,189 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Hayes' Medicare services by type, 2018 to 2020
- 2018
- 2020
- Office and hospital visits
- 2018: 542020: 1278%
Dr. Hayes compared with the California median for orthopedic surgeons, 2020
- Dr. Hayes
- California median
- Medicare services
- 12vs 68398% below
Medians across 1,844 orthopedic surgeons in California with Dmand AI profiles that report each measure.
Dr. Hayes' most billed Medicare procedure codes, 2020
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. Hayes and other orthopedic surgeons in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
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Dr. Darrell William Hayes graduated from Stanford University School Of Medicine
Dr. Hayes graduated from Stanford University School Of Medicine in 1978.
- Medical school
- Board certified in orthopaedic surgery
Source: Dmand AI Professional Profile Data
Sources for Dr. Darrell William Hayes'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 DataDmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation 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 |
| 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. Darrell William Hayes
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. Darrell William Hayes' NPI number?
Dr. Darrell William Hayes' NPI number is 1932194529. It was assigned on September 20, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Darrell William Hayes?
Dr. Darrell William Hayes is an orthopedic surgeon in Castro Valley, California. The primary specialty in the NPI Registry is Orthopaedic Surgery Physician (taxonomy code 207X00000X).
Where does Dr. Darrell William Hayes practice?
Dr. Hayes practices at 400 30th St Suite 400 Suite 400, Oakland, CA 94609. Dr. Hayes also practices at 20103 Lake Chabot Rd, Castro Valley, CA 94546. Dr. Hayes' primary practice is Darrell Hayes A Medical Corporation in Oakland, California.
What is Dr. Darrell William Hayes' office phone number?
The practice phone on file for Dr. Hayes is (510) 834-5484.
What is Dr. Darrell William Hayes' medical license number?
Dr. Hayes holds California license G40458.
Does Dr. Darrell William Hayes accept Medicare?
Yes. CMS data shows Dr. Hayes billed Medicare for 12 services in 2020.
Is Dr. Darrell William Hayes board certified?
Yes. Dr. Hayes is board certified in orthopaedic surgery by the American Board of Orthopaedic Surgery.
What services does Dr. Darrell William Hayes bill to Medicare?
In 2020, Dr. Hayes' most billed Medicare services were hospital inpatient care (99223).
Where did Dr. Darrell William Hayes go to medical school?
Dr. Hayes graduated from Stanford University School Of Medicine in 1978.
How long has Dr. Darrell William Hayes been practicing?
Dr. Hayes graduated from medical school in 1978, 48 years ago.
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