Dr. Earl Michael Darby, MD
- Medicare services, 2021
- 293
- Part D claims, 2022
- 36
- Hospital affiliations
- 1
- Industry payments
- $7,036
- Medical group
- 1
- Practice address
- 1411 East 31st Street, Oakland, CA 94602
- Practice phone
- Call (510) 437-4800
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Darby'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. Earl Michael Darby is a gastroenterologist in Oakland, California
Dr. Darby practices at Alameda Health System - Highland Hospital in Oakland, California, part of Alameda County.
Dr. Darby's NPI, 1790743292, was assigned on May 3, 2006. Dr. Darby graduated from UCSF School of Medicine in 1977. Dr. Darby's California license number on file is G388160.
- NPI
- 1790743292NPI Registry (opens in a new tab)
- NPI enumeration date
- May 3, 2006
- NPI status
- Active
- Practice phone
- (510) 437-4800
- 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; and Dmand AI Affiliation Data
Dr. Earl Michael Darby practices at Alameda Health System - Highland Hospital in Oakland, California
Dr. Darby's primary practice is Alameda Health System - Highland Hospital, at 1411 East 31st Street, Oakland, CA 94602 in Alameda County. The practice phone is (510) 437-4800.
- Alameda Health System - Highland Hospital1411 East 31st Street, Oakland, CA 94602 · Alameda CountyPhone(510) 437-4800
Source: Dmand AI Affiliation Data
Dr. Earl Michael Darby is affiliated with 3 sites of care and 1 medical group
Dr. Darby's primary practice is Alameda Health System - Highland Hospital in Oakland, California, part of Alameda County. The medical group on file is East Bay Center for Digestive Health. Dmand AI also links Dr. Darby to 1 more community health center and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Earl Michael Darby's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Darby practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Alameda Health System - Highland Hospital | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Alameda County and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Earl Michael Darby is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Darby's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Darby has a license on file in California.
Specialties and state licenses
- Gastroenterology, CaliforniaPrimary
Gastroenterologists near Dr. Darby
Counts of gastroenterologists 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. Earl Michael Darby billed Medicare for 293 services in 2021
CMS data shows 293 Medicare services from Dr. Darby across 7 procedure codes in 2021. Medicare paid $25,178 for them.
Dr. Darby's Medicare services by type, 2020 to 2021
- 2020
- 2021
- Office and hospital visits
- 2020: 3492021: 20043%
- Surgery
- 2020: 2422021: 9362%
- Other services
- 2020: 382021: 0100%
Where Dr. Darby's Medicare services took place, 2021
- In an office20068%
- In a facility9332%
Dr. Darby compared with the California median for gastroenterologists, 2021
- Dr. Darby
- California median
- Medicare services
- 293vs 58650% below
- Part D claims
- 36vs 38091% below
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Darby's most billed Medicare procedure codes, 2021
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. Darby?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Darby and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Earl Michael Darby's patients have a median age of 64
Across all payers, Dmand AI patient panel data puts Dr. Darby's median patient age at 64, with 50% women.
Dr. Darby's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 64
Patient panel by sex, all payers
- Women50%
- Men38%
Source: Dmand AI Patient Panel Data
Dr. Earl Michael Darby wrote 36 Medicare Part D claims in 2022
In 2022, Dr. Darby wrote 36 Medicare Part D claims. Every claim was for a generic drug. They cover 2 drugs, with $703 in total drug cost. In 2021, CMS named 644 claims across 11 drugs.
Dr. Darby's most prescribed drugs by claims, 2022
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, 2021 to 2022
- 2021
- 2022
- Claims for drugs CMS names
- 2021: 6442022: 3694%
Drugs named by CMS: 2 in 2022, 11 in 2021.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Earl Michael Darby received $7,036 in industry payments from 2016 to 2022
CMS Open Payments shows 405 general payments to Dr. Darby from 28 drug and device companies from 2016 to 2022. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $1,599.
General payments to Dr. Darby by program year, 2016 to 2022
General payments to Dr. Darby by kind, 2016 to 2022
- Food and beverage$7,022100%
- Education$150%
Companies that paid Dr. Darby the most, 2016 to 2022
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Earl Michael Darby graduated from UCSF School of Medicine
Dr. Darby graduated from UCSF School of Medicine in 1977.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. Earl Michael Darby accepts plans from 1 insurance carrier
Dr. Darby is in network with 1 carrier, including HCSC. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
- HCSC
Plan types Dr. Darby accepts, by number of carriers
- Medicare1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Earl Michael Darby'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 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 |
| 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. Earl Michael Darby
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. Earl Michael Darby's NPI number?
Dr. Earl Michael Darby's NPI number is 1790743292. It was assigned on May 3, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Earl Michael Darby?
Dr. Earl Michael Darby is a gastroenterologist in Oakland, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Earl Michael Darby practice?
Dr. Darby practices at 1411 East 31st Street, Oakland, CA 94602. Dr. Darby's primary practice is Alameda Health System - Highland Hospital in Oakland, California, part of Alameda County. Dmand AI also links Dr. Darby to 1 community health center and 1 group practice or clinic.
What is Dr. Earl Michael Darby's office phone number?
The practice phone on file for Dr. Darby is (510) 437-4800.
What is Dr. Earl Michael Darby's medical license number?
Dr. Darby's California license number on file is G388160.
Which hospitals is Dr. Earl Michael Darby affiliated with?
Dr. Darby practices at Alameda Health System - Highland Hospital in Oakland, California.
What medical group is Dr. Earl Michael Darby part of?
Dr. Darby is linked to East Bay Center for Digestive Health.
Does Dr. Earl Michael Darby accept Medicare?
Yes. CMS data shows Dr. Darby billed Medicare for 293 services in 2021.
What services does Dr. Earl Michael Darby bill to Medicare?
In 2021, Dr. Darby's most billed Medicare services were office visit, established patient (99213), office visit, new patient (99203) and surgery: digestive system (45378).
Where did Dr. Earl Michael Darby go to medical school?
Dr. Darby graduated from UCSF School of Medicine in 1977.
Show 4 more questionsShow fewer questions
What drugs does Dr. Earl Michael Darby prescribe most?
In 2022 Medicare Part D data, Dr. Darby's most prescribed drugs by claims were Pantoprazole Sodium and Famotidine.
Has Dr. Earl Michael Darby received payments from drug or device companies?
CMS Open Payments shows $7,036 in general payments to Dr. Darby from 28 companies from 2016 to 2022. The largest total came from Abbvie Inc.
How long has Dr. Earl Michael Darby been practicing?
Dr. Darby graduated from medical school in 1977, 49 years ago.
What insurance does Dr. Earl Michael Darby accept?
Dr. Darby is in network with 1 carrier, including HCSC. Medicare plans come from the most carriers, 1. Check the plan with the practice before a visit.
Selling to gastroenterology practices?
See gastroenterologists 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