Dr. Robert Marcial Guerra, MD
- Medicare services, 2023
- 17
- Part D claims, 2024
- 71
- Industry payments
- $52
- Affiliated sites
- 1
- Medical group
- 1
- Practice address
- 910 E Stowell Rd, Santa Maria, CA 93454
- Practice phone
- Call (805) 406-3627
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Lompoc Surgery Center
Santa Maria, California
Find Dr. Guerra's professional email, personal email and mobile number
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Dr. Robert Marcial Guerra is an internist in Santa Maria, California
Dr. Guerra practices at Lompoc Surgery Center in Santa Maria, California.
Dr. Guerra's NPI, 1518988062, was assigned on July 21, 2006. Dr. Guerra graduated from David Geffen School of Medicine at UCLA in 1987. Dr. Guerra's California license number on file is G65335.
- NPI
- 1518988062NPI Registry (opens in a new tab)
- Medicare PAC ID
- 5092700468
- NPI enumeration date
- July 21, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (805) 406-3627
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 65
- Medical school graduation
- 1987
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Robert Marcial Guerra practices at Lompoc Surgery Center in Santa Maria, California
Dr. Guerra's primary practice is Lompoc Surgery Center, at 910 E Stowell Rd, Santa Maria, CA 93454 in Santa Barbara County. The practice phone is (805) 406-3627.
- Lompoc Surgery Center910 E Stowell Rd, Santa Maria, CA 93454 · Santa Barbara CountyPhone(805) 406-3627
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Robert Marcial Guerra is affiliated with 2 sites of care and 1 medical group
Dr. Guerra's primary practice is Lompoc Surgery Center in Santa Maria, California. The medical group on file is Physicians' Medical Group. Dmand AI also links Dr. Guerra to 1 more group practice or clinic, 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. Robert Marcial Guerra's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Guerra practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Lompoc Surgery Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Robert Marcial Guerra is one of 16,751 internists in California
Internal medicine is Dr. Guerra's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Guerra has a license on file in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acute skin infection, adjustment disease, aneurysm, anxiety, arthritis, chronic diabetes, chronic hypertension and chronic obstructive pulmonary disease (COPD) among the conditions Dr. Guerra treats.
Internists near Dr. Guerra
Counts of internists 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. Robert Marcial Guerra billed Medicare for 17 services in 2023
CMS data shows 17 Medicare services from Dr. Guerra across 1 procedure code in 2023. Medicare paid $162 for them. Every service was in an office.
Dr. Guerra's Medicare services by type, 2022 to 2023
- 2022
- 2023
- Lab and pathology
- 2022: 642023: 1773%
- Tests and treatments
- 2022: 132023: 0100%
Dr. Guerra compared with the California median for internists, 2023
- Dr. Guerra
- California median
- Medicare services
- 17vs 36195% below
- Part D claims
- 3,517vs 4218.4 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Guerra's most billed Medicare procedure codes, 2023
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. Guerra and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Robert Marcial Guerra's patients have a median age of 66
Across all payers, Dmand AI patient panel data puts Dr. Guerra's median patient age at 66, with 53% women.
Dr. Guerra'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
- Women53%
- Men47%
Source: Dmand AI Patient Panel Data
Dr. Robert Marcial Guerra wrote 71 Medicare Part D claims in 2024
In 2024, Dr. Guerra wrote 71 Medicare Part D claims for 36 patients. 89% of them were for generic drugs. They cover 90 drugs, with $443,472 in total drug cost. In 2022, CMS named 6,980 claims across 139 drugs.
Dr. Guerra's Part D claims by kind of drug, 2024
- Generic63 claims89%
- Brand-name and other8 claims11%
Dr. Guerra's most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 6,9802023: 3,51750%
Drugs named by CMS: 90 in 2023, 139 in 2022.
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
How Dr. Robert Marcial Guerra takes part in Medicare
Dr. Guerra accepts Medicare assignment, so Medicare's approved amount is taken as full payment.
- Accepts Medicare assignment
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. Robert Marcial Guerra received $52 in industry payments from 2016 to 2020
CMS Open Payments shows 3 general payments to Dr. Guerra from 2 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 100% of the total. Gilead Sciences, Inc. paid the most, $33.
General payments to Dr. Guerra by program year, 2016 to 2020
Companies that paid Dr. Guerra the most, 2016 to 2020
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Robert Marcial Guerra graduated from David Geffen School of Medicine at UCLA
Dr. Guerra graduated from David Geffen School of Medicine at UCLA in 1987.
- Medical school
Source: Dmand AI Professional Profile Data
Sources for Dr. Robert Marcial Guerra'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 Data |
| 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) |
| 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 Dr. Robert Marcial Guerra
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What is Dr. Robert Marcial Guerra's NPI number?
Dr. Robert Marcial Guerra's NPI number is 1518988062. It was assigned on July 21, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Robert Marcial Guerra?
Dr. Robert Marcial Guerra is an internist in Santa Maria, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Robert Marcial Guerra practice?
Dr. Guerra practices at 910 E Stowell Rd, Santa Maria, CA 93454. Dr. Guerra's primary practice is Lompoc Surgery Center in Santa Maria, California. Dmand AI also links Dr. Guerra to 1 group practice or clinic.
What is Dr. Robert Marcial Guerra's office phone number?
The practice phone on file for Dr. Guerra is (805) 406-3627.
What is Dr. Robert Marcial Guerra's medical license number?
Dr. Guerra's California license number on file is G65335.
What medical group is Dr. Robert Marcial Guerra part of?
Dr. Guerra is linked to Physicians' Medical Group.
Does Dr. Robert Marcial Guerra accept Medicare?
Yes. CMS data shows Dr. Guerra billed Medicare for 17 services in 2023, and Dr. Guerra accepts Medicare assignment.
What services does Dr. Robert Marcial Guerra bill to Medicare?
In 2023, Dr. Guerra's most billed Medicare services were lab and pathology test (83036).
Where did Dr. Robert Marcial Guerra go to medical school?
Dr. Guerra graduated from David Geffen School of Medicine at UCLA in 1987.
What drugs does Dr. Robert Marcial Guerra prescribe most?
In 2023 Medicare Part D data, Dr. Guerra's most prescribed drugs by claims were Atorvastatin Calcium, Losartan Potassium and Amlodipine Besylate.
Has Dr. Robert Marcial Guerra received payments from drug or device companies?
CMS Open Payments shows $52 in general payments to Dr. Guerra from 2 companies from 2016 to 2020. The largest total came from Gilead Sciences, Inc.
How long has Dr. Robert Marcial Guerra been practicing?
Dr. Guerra graduated from medical school in 1987, 39 years ago.
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