Dr. Ralph A. Herrera, MD
- Medicare services, 2024
- 22
- Medicare patients, 2024
- 21
- Part D claims, 2024
- 6,435
- Hospital affiliations
- 1
- Medical group
- 1
- Practice address
- 7373 West Ln, Stockton, CA 95210
- Practice phone
- Call (209) 476-2000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Permanente Medical Group Inc
Stockton, California
Find Dr. Herrera'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. Ralph A. Herrera is an internist in Stockton, California
Dr. Herrera practices at Permanente Medical Group Inc in Stockton, California.
Dr. Herrera's NPI, 1306924055, was assigned on November 1, 2006. Dr. Herrera graduated from Creighton University School of Medicine - Omaha in 1996. Dr. Herrera holds California license A63813.
- NPI
- 1306924055NPI Registry (opens in a new tab)
- Medicare PAC ID
- 1850587924
- NPI enumeration date
- November 1, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (209) 476-2000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 56
- Medical school graduation
- 1996
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Ralph A. Herrera practices at Permanente Medical Group Inc in Stockton, California
Dr. Herrera's primary practice is Permanente Medical Group Inc, at 7373 West Ln, Stockton, CA 95210 in San Joaquin County. The practice phone is (209) 476-2000.
- Permanente Medical Group Inc7373 West Ln, Stockton, CA 95210 · San Joaquin CountyPhone(209) 476-2000
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. Ralph A. Herrera is affiliated with 2 sites of care and 1 medical group
Dr. Herrera's primary practice is Permanente Medical Group Inc in Stockton, California. Dr. Herrera is also affiliated with Kaiser Permanente South Sacramento Medical Center. The medical group on file is The Permanente Medical Group, Inc.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ralph A. Herrera's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Herrera practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Permanente Medical Group Inc | 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. Ralph A. Herrera is one of 16,751 internists in California
Internal medicine is Dr. Herrera's primary specialty in the NPI Registry, under taxonomy code 207R00000X. Dr. Herrera is board certified in internal medicine by the American Board of Internal Medicine. Dr. Herrera is licensed in California.
Specialties and state licenses
- Internal medicine, CaliforniaPrimary
Clinical focus
Dmand AI lists acid reflux, chronic diabetes and chronic hypertension among the conditions Dr. Herrera treats.
Internists near Dr. Herrera
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. Ralph A. Herrera billed Medicare for 22 services in 2024
CMS data shows 22 Medicare services from Dr. Herrera across 1 procedure code in 2024, all of them office visits, for 21 Medicare patients. Medicare paid $831 for them. Every service was in an office.
Dr. Herrera's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 412024: 2246%
Dr. Herrera compared with the California median for internists, 2024
- Dr. Herrera
- California median
- Medicare services
- 22vs 36194% below
- Medicare patients
- 21vs 15186% below
- Part D claims
- 5,838vs 42113.9 times
Medians across 15,815 internists in California with Dmand AI profiles that report each measure.
Dr. Herrera's 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.
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Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Herrera and other internists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ralph A. Herrera treated 21 Medicare patients in 2024, average age 68
CMS counts 21 Medicare patients who saw Dr. Herrera in 2024. 57% of them have high blood pressure. Their average risk score is 0.87, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Herrera's median patient age at 59, with 58% women.
Chronic conditions among Dr. Herrera's Medicare patients, 2024
- High blood pressure57%
Share of Medicare patients with each condition. A patient can have several.
Dr. Herrera's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 59
Patient panel by sex, all payers
- Women58%
- Men41%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Ralph A. Herrera wrote 6,435 Medicare Part D claims in 2024
In 2024, Dr. Herrera wrote 6,435 Medicare Part D claims for 716 patients. 89% of them were for generic drugs. CMS names the drug for 5,838 of them, across 116 drugs with 11 or more claims each, at $294,212 in total drug cost. In 2023, CMS named 6,837 claims across 122 drugs.
Dr. Herrera's Part D claims by kind of drug, 2024
- Generic5,741 claims89%
- Brand-name599 claims9%
- Other95 claims1%
Dr. Herrera's 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.
Drug classes CMS tracks in Dr. Herrera's Part D claims, 2024
- Opioids7%440 of 6,435 claims
- Antibiotics2%150 of 6,435 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 6,8372024: 5,83815%
Drugs named by CMS: 116 in 2024, 122 in 2023.
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. Ralph A. Herrera takes part in Medicare
Dr. Herrera 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. Ralph A. Herrera has 1 award and honors on record
Dmand AI lists 1 award for Dr. Herrera, most recently CMS Stage 1 2012 in 2011.
Awards and honors for Dr. Herrera
- 2011
- CMS Stage 1 2012
Source: Dmand AI Professional Profile Data
Dr. Ralph A. Herrera graduated from Creighton University School of Medicine - Omaha
Dr. Herrera graduated from Creighton University School of Medicine - Omaha in 1996. Dr. Herrera is a member of ACP.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Ralph A. Herrera accepts plans from 2 insurance carriers
Dr. Herrera is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
- Kaiser Permanente
- CMS Medicare
Plan types Dr. Herrera accepts, by number of carriers
- EPO1
- HMO1
- Medicare1
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ralph A. Herrera'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 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 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) |
| 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. Ralph A. Herrera
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. Ralph A. Herrera's NPI number?
Dr. Ralph A. Herrera's NPI number is 1306924055. It was assigned on November 1, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ralph A. Herrera?
Dr. Ralph A. Herrera is an internist in Stockton, California. The primary specialty in the NPI Registry is Internal Medicine Physician (taxonomy code 207R00000X).
Where does Dr. Ralph A. Herrera practice?
Dr. Herrera practices at 7373 West Ln, Stockton, CA 95210. Dr. Herrera's primary practice is Permanente Medical Group Inc in Stockton, California.
What is Dr. Ralph A. Herrera's office phone number?
The practice phone on file for Dr. Herrera is (209) 476-2000.
What is Dr. Ralph A. Herrera's medical license number?
Dr. Herrera holds California license A63813.
Which hospitals is Dr. Ralph A. Herrera affiliated with?
Dr. Herrera is affiliated with Kaiser Permanente South Sacramento Medical Center.
What medical group is Dr. Ralph A. Herrera part of?
Dr. Herrera is linked to The Permanente Medical Group, Inc.
Does Dr. Ralph A. Herrera accept Medicare?
Yes. CMS data shows Dr. Herrera billed Medicare for 22 services in 2024, and Dr. Herrera accepts Medicare assignment.
How many Medicare patients does Dr. Ralph A. Herrera see?
CMS counts 21 Medicare patients who saw Dr. Herrera in 2024, with an average age of 68.
Is Dr. Ralph A. Herrera board certified?
Yes. Dr. Herrera is board certified in internal medicine by the American Board of Internal Medicine.
Show 5 more questionsShow fewer questions
What services does Dr. Ralph A. Herrera bill to Medicare?
In 2024, Dr. Herrera's most billed Medicare services were office visit, established patient (99213).
Where did Dr. Ralph A. Herrera go to medical school?
Dr. Herrera graduated from Creighton University School of Medicine - Omaha in 1996.
What drugs does Dr. Ralph A. Herrera prescribe most?
In 2024 Medicare Part D data, Dr. Herrera's most prescribed drugs by claims were Atorvastatin Calcium, Hydrocodone-Acetaminophen and Amlodipine Besylate.
How long has Dr. Ralph A. Herrera been practicing?
Dr. Herrera graduated from medical school in 1996, 30 years ago.
What insurance does Dr. Ralph A. Herrera accept?
Dr. Herrera is in network with 2 carriers, including Kaiser Permanente and CMS Medicare. EPO plans come from the most carriers, 1. Check the plan with the practice before a visit.
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