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Dr. Ronald S. Fishbach, MD
NPI1184659617
- Medicare services, 2019
- 443
- Part D claims, 2019
- 496
- Publications
- 3
- Hospital affiliations
- 1
- Industry payments
- $308
- Practice address
- 11500 Brookshire Avenue, Downey, CA 90241
- Practice phone
- Call (562) 904-5000
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Fishbach's professional email, personal email and mobile number
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Dr. Ronald S. Fishbach is an infectious disease specialist in Downey, California
Dr. Fishbach practices at PIH Health Downey Hospital in Downey, California, part of PIH Health.
Dr. Fishbach's NPI, 1184659617, was assigned on July 12, 2006. Dr. Fishbach graduated from New York University School of Medicine in 1967. Dr. Fishbach holds California license A39863.
NPI and contact details
- NPI
- 1184659617NPI Registry (opens in a new tab)
- NPI enumeration date
- July 12, 2006
- NPI status
- Active
- Practice phone
- (562) 904-5000
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1967
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Ronald S. Fishbach practices at PIH Health Downey Hospital in Downey, California
Dr. Fishbach's primary practice is PIH Health Downey Hospital, at 11500 Brookshire Avenue, Downey, CA 90241 in Los Angeles County. The practice phone is (562) 904-5000.
- PIH Health Downey Hospital11500 Brookshire Avenue, Downey, CA 90241 · Los Angeles CountyPhone(562) 904-5000
Source: Dmand AI Affiliation Data
Dr. Ronald S. Fishbach is affiliated with 1 site of care
Dr. Fishbach's primary practice is PIH Health Downey Hospital in Downey, California, part of PIH Health.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Ronald S. Fishbach's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Fishbach practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| PIH Health Downey Hospital | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Ronald S. Fishbach is one of 1,054 infectious disease specialists in California
Infectious disease is Dr. Fishbach's primary specialty in the NPI Registry, under taxonomy code 207RI0200X. Dr. Fishbach is board certified in infectious disease by the American Board of Internal Medicine. Dr. Fishbach is licensed in California.
Specialties and state licenses
- Infectious disease, CaliforniaPrimary
Infectious disease specialists near Dr. Fishbach
Counts of infectious disease specialists with a Dmand AI profile, by place and practice. Each opens the list.
1,054infectious disease specialists in California
7infectious disease specialists in Downey
3infectious disease specialists at PIH Health Downey HospitalSources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks
Dr. Ronald S. Fishbach billed Medicare for 443 services in 2019
CMS data shows 443 Medicare services from Dr. Fishbach across 8 procedure codes in 2019. Medicare paid $30,915 for them.
Medicare services, 2019443
Paid by Medicare$30,915
Procedure codes8
Dr. Fishbach's Medicare services by type, 2018 to 2019
- 2018
- 2019
- Office and hospital visits
- 2018: 1,5022019: 39774%
- Tests and treatments
- 2018: 1062019: 3270%
- Other services
- 2018: 572019: 1475%
Where Dr. Fishbach's Medicare services took place, 2019
- In an office20346%
- In a facility24054%
Dr. Fishbach compared with the California median for infectious disease specialists, 2019
- Dr. Fishbach
- California median
- Medicare services
- 443vs 429Close to median
- Part D claims
- 496vs 1194.2 times
Medians across 930 infectious disease specialists in California with Dmand AI profiles that report each measure.
Dr. Fishbach's most billed Medicare procedure codes, 2019
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. Fishbach?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Fishbach and other infectious disease specialists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Ronald S. Fishbach's patients have a median age of 57
Across all payers, Dmand AI patient panel data puts Dr. Fishbach's median patient age at 57, with 45% women.
Dr. Fishbach's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 57
Patient panel by sex, all payers
- Women45%
- Men55%
Source: Dmand AI Patient Panel Data
Dr. Ronald S. Fishbach wrote 496 Medicare Part D claims in 2019
In 2019, Dr. Fishbach wrote 496 Medicare Part D claims. They cover 19 drugs, with $16,241 in total drug cost. In 2018, CMS named 1,093 claims across 37 drugs.
Part D claims, 2019496
Drugs named by CMS19
Total drug cost$16,241
Dr. Fishbach's most prescribed drugs by claims, 2019
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, 2018 to 2019
- 2018
- 2019
- Claims for drugs CMS names
- 2018: 1,0932019: 49655%
Drugs named by CMS: 19 in 2019, 37 in 2018.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
For MedTech and pharma teams
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Dr. Ronald S. Fishbach has 3 publications on record
Dmand AI links 3 papers to Dr. Fishbach. The most frequent topics are Bacteria.
Papers3
Topics Dr. Fishbach writes about most
- Bacteria
Recent publications by Dr. Fishbach
BacteriaBacterial InfectionsBiopsy, Needle
Am J Clin Pathol
AbscessAnaerobiosisBacteria
See who Dr. Fishbach researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Fishbach works with, so you can find a warm path to the right infectious disease specialists.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. Ronald S. Fishbach received $308 in industry payments from 2016 to 2019
CMS Open Payments shows 17 general payments to Dr. Fishbach from 5 drug and device companies from 2016 to 2019. Food and beverage make up the largest share, 100% of the total. Bausch Health Americas, Inc. paid the most, $129.
General payments to Dr. Fishbach by program year, 2016 to 2019
Companies that paid Dr. Fishbach the most, 2016 to 2019
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Ronald S. Fishbach graduated from New York University School of Medicine
Dr. Fishbach graduated from New York University School of Medicine in 1967.
- Medical school
- Board certified in infectious disease
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Ronald S. Fishbach accepts plans from 3 insurance carriers
Dr. Fishbach is in network with 3 carriers, including Aetna, LA Care and Elevance. HMO plans come from the most carriers, 3. Check the plan with the practice before a visit.
- Aetna
- LA Care
- Elevance
Plan types Dr. Fishbach accepts, by number of carriers
- HMO3
- POS2
- EPO1
- Medicaid1
- Medicare1
- PPO1
Source: Dmand AI Insurance Network Data
Sources for Dr. Ronald S. Fishbach'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) |
| Publications, topics and co-authors | PubMed (National Library of Medicine) (opens in a new tab)Dmand AI Research Linkage |
| 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. Ronald S. Fishbach
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. Ronald S. Fishbach's NPI number?
Dr. Ronald S. Fishbach's NPI number is 1184659617. It was assigned on July 12, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Ronald S. Fishbach?
Dr. Ronald S. Fishbach is an infectious disease specialist in Downey, California. The primary specialty in the NPI Registry is Infectious Disease Physician (taxonomy code 207RI0200X).
Where does Dr. Ronald S. Fishbach practice?
Dr. Fishbach practices at 11500 Brookshire Avenue, Downey, CA 90241. Dr. Fishbach's primary practice is PIH Health Downey Hospital in Downey, California, part of PIH Health.
What is Dr. Ronald S. Fishbach's office phone number?
The practice phone on file for Dr. Fishbach is (562) 904-5000.
What is Dr. Ronald S. Fishbach's medical license number?
Dr. Fishbach holds California license A39863.
Which hospitals is Dr. Ronald S. Fishbach affiliated with?
Dr. Fishbach practices at PIH Health Downey Hospital in Downey, California.
Does Dr. Ronald S. Fishbach accept Medicare?
Yes. CMS data shows Dr. Fishbach billed Medicare for 443 services in 2019.
Is Dr. Ronald S. Fishbach board certified?
Yes. Dr. Fishbach is board certified in infectious disease by the American Board of Internal Medicine.
What services does Dr. Ronald S. Fishbach bill to Medicare?
In 2019, Dr. Fishbach's most billed Medicare services were hospital inpatient care (99232), office visit, established patient (99214) and hospital inpatient care (99233).
Where did Dr. Ronald S. Fishbach go to medical school?
Dr. Fishbach graduated from New York University School of Medicine in 1967.
Show 5 more questionsShow fewer questions
What drugs does Dr. Ronald S. Fishbach prescribe most?
In 2019 Medicare Part D data, Dr. Fishbach's most prescribed drugs by claims were Atorvastatin Calcium, Rosuvastatin Calcium and Amlodipine Besylate.
Has Dr. Ronald S. Fishbach received payments from drug or device companies?
CMS Open Payments shows $308 in general payments to Dr. Fishbach from 5 companies from 2016 to 2019. The largest total came from Bausch Health Americas, Inc.
How long has Dr. Ronald S. Fishbach been practicing?
Dr. Fishbach graduated from medical school in 1967, 59 years ago.
Does Dr. Ronald S. Fishbach do research?
Dmand AI links 3 publications to Dr. Fishbach.
What insurance does Dr. Ronald S. Fishbach accept?
Dr. Fishbach is in network with 3 carriers, including Aetna, LA Care and Elevance. HMO plans come from the most carriers, 3. Check the plan with the practice before a visit.
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