Dr. Derrick Jay Barnes, MD
- Medicare services, 2024
- 48
- Medicare patients, 2024
- 61
- Part D claims, 2024
- 80
- Hospital affiliations
- 1
- Industry payments
- $1,555
- Practice address
- 23845 Holman Hwy, Monterey, CA 93940
- Practice phone
- Call (831) 658-3639
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Montage Medical Group
Monterey, California
Find Dr. Barnes' 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. Derrick Jay Barnes is an OB-GYN in Monterey, California
Dr. Barnes practices at Montage Medical Group in Monterey, California.
Dr. Barnes' NPI, 1336236488, was assigned on October 9, 2006. Dr. Barnes graduated from UVA School of Medicine in 2004. Dr. Barnes holds California license C133289.
- NPI
- 1336236488NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5294802872
- NPI enumeration date
- October 9, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (831) 658-3639
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 48
- Medical school graduation
- 2004
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Derrick Jay Barnes practices at Montage Medical Group in Monterey, California
Dr. Barnes' primary practice is Montage Medical Group, at 23845 Holman Hwy, Monterey, CA 93940 in Monterey County. The practice phone is (831) 658-3639.
- Montage Medical Group23845 Holman Hwy, Monterey, CA 93940 · Monterey CountyPhone(831) 658-3639
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Derrick Jay Barnes is affiliated with 5 sites of care and 6 medical groups
Dr. Barnes' primary practice is Montage Medical Group in Monterey, California. Dr. Barnes is also affiliated with Community Hospital of the Monterey Peninsula. The medical group on file is Montage Medical Group. Dmand AI also links Dr. Barnes to 5 more medical groups and 3 group practices and clinics, each named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. Derrick Jay Barnes' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Barnes practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Montage Medical Group | Available with a free account |
| +4 more sites and 5 medical groups | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Derrick Jay Barnes is one of 4,642 OB-GYNs in California
Obstetrics and gynecology is Dr. Barnes' primary specialty in the NPI Registry, under taxonomy code 207V00000X. Dr. Barnes is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology. Dmand AI has Dr. Barnes' licenses on file in 3 states: California, North Carolina and South Carolina.
Specialties and state licenses
- Obstetrics and gynecology, CaliforniaPrimary
- North Carolina license
- South Carolina license
Clinical focus
Dmand AI lists ovarian cyst and vaginal infection among the conditions Dr. Barnes treats.
OB-GYNs near Dr. Barnes
Counts of OB-GYNs 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. Derrick Jay Barnes billed Medicare for 48 services in 2024
CMS data shows 48 Medicare services from Dr. Barnes across 2 procedure codes in 2024, all of them office visits, for 61 Medicare patients. Medicare paid $5,336 for them. Every service was in an office.
Dr. Barnes' Medicare services by type, 2019 to 2024
- 2019
- 2024
- Office and hospital visits
- 2019: 02024: 48
- Lab and pathology
- 2019: 142024: 0100%
Dr. Barnes compared with the California median for OB-GYNs, 2024
- Dr. Barnes
- California median
- Medicare services
- 48vs 5817% below
- Medicare patients
- 61vs 5217% above
- Part D claims
- 12vs 3566% below
Medians across 3,823 OB-GYNs in California with Dmand AI profiles that report each measure.
Dr. Barnes' 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.
Need commercial claims for Dr. Barnes?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Barnes and other OB-GYNs in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Derrick Jay Barnes treated 61 Medicare patients in 2024, average age 72
CMS counts 61 Medicare patients who saw Dr. Barnes in 2024. The largest group is 65 to 74, with 36 patients. 75% of them have high cholesterol, and 72% have high blood pressure. 25% are also on Medicaid. Their average risk score is 1.25, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Barnes' median patient age at 34, with 99% women.
Dr. Barnes' Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Chronic conditions among Dr. Barnes' Medicare patients, 2024
- High cholesterol75%
- High blood pressure72%
- Arthritis46%
- Osteoporosis31%
- Cancer25%
- Anxiety23%
- Mood disorders23%
- Depression20%
Share of Medicare patients with each condition. A patient can have several.
Dr. Barnes' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 34
Patient panel by sex, all payers
- Women99%
- Men0%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Derrick Jay Barnes wrote 80 Medicare Part D claims in 2024
In 2024, Dr. Barnes wrote 80 Medicare Part D claims for 26 patients. 99% of them were for generic drugs. CMS names the drug for 12 of them, across 1 drug with 11 or more claims each, at $473 in total drug cost. In 2019, CMS named 12 claims across 1 drug.
Dr. Barnes' Part D claims by kind of drug, 2024
- Generic79 claims99%
- Brand-name and other1 claims1%
Dr. Barnes' 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.
Part D claims for drugs CMS names, 2019 to 2024
- 2019
- 2024
- Claims for drugs CMS names
- 2019: 122024: 12No change
Drugs named by CMS: 1 in 2024, 1 in 2019.
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. Derrick Jay Barnes offers telehealth to Medicare patients
Dr. Barnes accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Barnes as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Removal of the uterus: 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
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Derrick Jay Barnes received $1,555 in industry payments from 2016 to 2025
CMS Open Payments shows 21 general payments to Dr. Barnes from 15 drug and device companies from 2016 to 2025. Travel and lodging make up the largest share, 60% of the total. Intuitive Surgical, Inc. paid the most, $1,051.
General payments to Dr. Barnes by program year, 2016 to 2025
General payments to Dr. Barnes by kind, 2016 to 2025
- Travel and lodging$92860%
- Food and beverage$49532%
- Education$1329%
Companies that paid Dr. Barnes the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Derrick Jay Barnes has 2 awards and honors on record
Dmand AI lists 2 awards for Dr. Barnes, most recently CMS Stage 1 EHR in 2014.
Awards and honors for Dr. Barnes
- 2014
- CMS Stage 1 EHR
- Undated
- ACOG Fellow
Source: Dmand AI Professional Profile Data
Dr. Derrick Jay Barnes graduated from UVA School of Medicine
Dr. Barnes graduated from UVA School of Medicine in 2004. Dr. Barnes is a member of AAGL and American College of Obstetricians and Gynecologists.
- Medical school
- Board certified in obstetrics & gynecology
Source: Dmand AI Professional Profile Data
Dr. Derrick Jay Barnes accepts plans from 11 insurance carriers
Dr. Barnes is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Elevance
- Regence Health Plans
- Alliant Health Plans
- +3 more carriersWith a free account
Plan types Dr. Barnes accepts, by number of carriers
- Medicare7
- PPO7
- HMO6
- EPO3
- POS3
Source: Dmand AI Insurance Network Data
Sources for Dr. Derrick Jay Barnes'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 Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand 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 |
| 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) |
| Awards and committee roles | Dmand AI Professional Profile Data |
| 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. Derrick Jay Barnes
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. Derrick Jay Barnes' NPI number?
Dr. Derrick Jay Barnes' NPI number is 1336236488. It was assigned on October 9, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Derrick Jay Barnes?
Dr. Derrick Jay Barnes is an OB-GYN in Monterey, California. The primary specialty in the NPI Registry is Obstetrics & Gynecology Physician (taxonomy code 207V00000X).
Where does Dr. Derrick Jay Barnes practice?
Dr. Barnes practices at 23845 Holman Hwy, Monterey, CA 93940. Dr. Barnes' primary practice is Montage Medical Group in Monterey, California. Dmand AI also links Dr. Barnes to 5 medical groups and 3 group practices and clinics.
What is Dr. Derrick Jay Barnes' office phone number?
The practice phone on file for Dr. Barnes is (831) 658-3639.
What is Dr. Derrick Jay Barnes' medical license number?
Dr. Barnes holds California license C133289, one of the licenses on file in 3 states.
Which states has Dr. Derrick Jay Barnes been licensed in?
Dmand AI has state licenses on file for Dr. Barnes in California (2014 to 2026), North Carolina (2008 to 2025) and South Carolina (2004 to 2008).
Which hospitals is Dr. Derrick Jay Barnes affiliated with?
Dr. Barnes is affiliated with Community Hospital of the Monterey Peninsula.
What medical group is Dr. Derrick Jay Barnes part of?
Dr. Barnes is linked to Montage Medical Group. Dmand AI links Dr. Barnes to 5 more medical groups.
Does Dr. Derrick Jay Barnes accept Medicare?
Yes. CMS data shows Dr. Barnes billed Medicare for 48 services in 2024, and Dr. Barnes accepts Medicare assignment.
Does Dr. Derrick Jay Barnes offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Barnes as offering telehealth services.
Show 8 more questionsShow fewer questions
How many Medicare patients does Dr. Derrick Jay Barnes see?
CMS counts 61 Medicare patients who saw Dr. Barnes in 2024, with an average age of 72.
Is Dr. Derrick Jay Barnes board certified?
Yes. Dr. Barnes is board certified in obstetrics & gynecology by the American Board of Obstetrics and Gynecology.
What services does Dr. Derrick Jay Barnes bill to Medicare?
In 2024, Dr. Barnes' most billed Medicare services were office visit, new patient (99204) and office visit, established patient (99214).
Where did Dr. Derrick Jay Barnes go to medical school?
Dr. Barnes graduated from UVA School of Medicine in 2004.
What drugs does Dr. Derrick Jay Barnes prescribe most?
In 2024 Medicare Part D data, Dr. Barnes' most prescribed drugs by claims were Estradiol.
Has Dr. Derrick Jay Barnes received payments from drug or device companies?
CMS Open Payments shows $1,555 in general payments to Dr. Barnes from 15 companies from 2016 to 2025. The largest total came from Intuitive Surgical, Inc.
How long has Dr. Derrick Jay Barnes been practicing?
Dr. Barnes graduated from medical school in 2004, 22 years ago.
What insurance does Dr. Derrick Jay Barnes accept?
Dr. Barnes is in network with 11 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. Medicare plans come from the most carriers, 7. Check the plan with the practice before a visit.
Selling to obstetrics and gynecology practices?
See OB-GYNs 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