Douglas J. Hollabaugh, OD
- Medicare patients, 2024
- 41
- Part D claims, 2024
- 17
- Industry payments
- $17
- Affiliated sites
- 2
- State license
- 1
- Practice address
- 7115 Greenback Lane Floor 1,2,3, Citrus Heights, CA 95621
- Practice phone
- Call (916) 379-2861
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Primary & Specialty Care - Mercy Medical Group - Citrus Heights, CA
Clinical Lab - Basic Testing Only · Citrus Heights, California
Find Douglas Hollabaugh'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.
Douglas J. Hollabaugh is an optometrist in Citrus Heights, California
Douglas Hollabaugh practices at Primary & Specialty Care - Mercy Medical Group - Citrus Heights, CA in Citrus Heights, California.
Douglas Hollabaugh's NPI, 1407908692, was assigned on January 17, 2007. Douglas Hollabaugh graduated from University of California - School of Optometry in 1992. Douglas Hollabaugh holds California license 9879TPA.
- NPI
- 1407908692NPI Registry (opens in a new tab)
- Medicare PAC ID
- 0749358760
- NPI enumeration date
- January 17, 2007
- NPI status
- Active
- Practice phone
- (916) 379-2861
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 60
- Medical school graduation
- 1992
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Douglas J. Hollabaugh practices at Primary & Specialty Care - Mercy Medical Group - Citrus Heights, CA in Citrus Heights, California
Douglas Hollabaugh's primary practice is Primary & Specialty Care - Mercy Medical Group - Citrus Heights, CA, at 7115 Greenback Lane Floor 1,2,3, Citrus Heights, CA 95621. The practice phone is (916) 379-2861.
- Primary & Specialty Care - Mercy Medical Group - Citrus Heights, CA7115 Greenback Lane Floor 1,2,3, Citrus Heights, CA 95621Phone(916) 379-2861
Source: Dmand AI Affiliation Data
Douglas J. Hollabaugh is affiliated with 2 sites of care
Douglas Hollabaugh's primary practice is Primary & Specialty Care - Mercy Medical Group - Citrus Heights, CA in Citrus Heights, California. Dmand AI also links Douglas Hollabaugh to 1 physician office, named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Douglas J. Hollabaugh's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Douglas Hollabaugh practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Primary & Specialty Care - Mercy Medical Group - Citrus Heights, CA | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Douglas J. Hollabaugh is one of 7,206 optometrists in California
Optometrist is Douglas Hollabaugh's primary specialty in the NPI Registry, under taxonomy code 152W00000X. Douglas Hollabaugh is licensed in California.
Specialties and state licenses
- Optometrist, CaliforniaPrimary
Optometrists near Douglas Hollabaugh
Counts of optometrists 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
Douglas J. Hollabaugh treated 41 Medicare patients in 2024, average age 75
CMS counts 41 Medicare patients who saw Douglas Hollabaugh in 2024. The largest group is 65 to 74, with 20 patients. 66% of them have high cholesterol, and 59% have high blood pressure. Their average risk score is 0.86, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Douglas Hollabaugh's median patient age at 66, with 36% women.
Douglas Hollabaugh's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Douglas Hollabaugh's Medicare patients by sex, 2024
- Women2663%
- Men1537%
Chronic conditions among Douglas Hollabaugh's Medicare patients, 2024
- High cholesterol66%
- High blood pressure59%
- Arthritis54%
Share of Medicare patients with each condition. A patient can have several.
Douglas Hollabaugh's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 66
Patient panel by sex, all payers
- Women36%
- Men64%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Douglas J. Hollabaugh wrote 17 Medicare Part D claims in 2024
In 2024, Douglas Hollabaugh wrote 17 Medicare Part D claims for 12 patients. 65% of them were for generic drugs.
Douglas Hollabaugh's Part D claims by kind of drug, 2024
- Generic11 claims65%
- Brand-name and other6 claims35%
Source: Medicare Part D Prescribers - by Provider (CMS), 2024 data
How Douglas J. Hollabaugh takes part in Medicare
Cataract surgery: 1 to 10 procedures (CMS shows small counts as a range)
Source: Doctors and Clinicians Utilization Data (CMS)
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Douglas J. Hollabaugh received $17 in industry payments in 2025
CMS Open Payments shows 1 general payment to Douglas Hollabaugh from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Bausch & Lomb Americas Inc. paid the most, $17.
Companies that paid Douglas Hollabaugh the most, 2025 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Douglas J. Hollabaugh graduated from University of California - School of Optometry
Douglas Hollabaugh graduated from University of California - School of Optometry in 1992.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Douglas J. Hollabaugh'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 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 (CMS) (opens in a new tab) |
| MIPS scores, telehealth, assignment and procedure percentiles | Doctors and Clinicians Utilization Data (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 |
| 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 Douglas J. Hollabaugh
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Douglas J. Hollabaugh's NPI number?
Douglas J. Hollabaugh's NPI number is 1407908692. It was assigned on January 17, 2007, and it is active in the NPI Registry.
What does Douglas J. Hollabaugh specialize in?
Douglas J. Hollabaugh is an optometrist in Citrus Heights, California. The primary specialty in the NPI Registry is Optometrist (taxonomy code 152W00000X).
Where does Douglas J. Hollabaugh practice?
Douglas Hollabaugh practices at 7115 Greenback Lane Floor 1,2,3, Citrus Heights, CA 95621. Douglas Hollabaugh's primary practice is Primary & Specialty Care - Mercy Medical Group - Citrus Heights, CA in Citrus Heights, California. Dmand AI also links Douglas Hollabaugh to 1 physician office.
What is Douglas J. Hollabaugh's office phone number?
The practice phone on file for Douglas Hollabaugh is (916) 379-2861.
What is Douglas J. Hollabaugh's medical license number?
Douglas Hollabaugh holds California license 9879TPA.
How many Medicare patients does Douglas J. Hollabaugh see?
CMS counts 41 Medicare patients who saw Douglas Hollabaugh in 2024, with an average age of 75.
Where did Douglas J. Hollabaugh go to medical school?
Douglas Hollabaugh graduated from University of California - School of Optometry in 1992.
Has Douglas J. Hollabaugh received payments from drug or device companies?
CMS Open Payments shows $17 in general payments to Douglas Hollabaugh from 1 company from 2025 to 2025. The largest total came from Bausch & Lomb Americas Inc.
How long has Douglas J. Hollabaugh been practicing?
Douglas Hollabaugh graduated from medical school in 1992, 34 years ago.
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