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Dr. John Hewitt, MD
NPI1902840176
- Medicare services, 2016
- 41
- Publications
- 149
- Industry payments
- $95
- Insurance carriers
- 1
- State licenses
- 5
- Practice address
- 2615 Chester Ave, Bakersfield, CA 93301
- Practice phone
- Call (707) 995-5890
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Hewitt's professional email, personal email and mobile number
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Dr. John Hewitt is an emergency medicine physician in Bakersfield, California
Dr. Hewitt practices in Bakersfield, California.
Dr. Hewitt's NPI, 1902840176, was assigned on June 16, 2006. Dr. Hewitt graduated from Universidad Autonoma de Guadalajara in 1975. Dr. Hewitt holds California license A31314.
NPI and contact details
- NPI
- 1902840176NPI Registry (opens in a new tab)
- NPI enumeration date
- June 16, 2006
- NPI status
- Active
- Practice phone
- (707) 995-5890
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1975
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. John Hewitt's practice address is in Bakersfield, California
Dr. Hewitt's practice address in the NPI Registry is 2615 Chester Ave, Bakersfield, CA 93301, in Kern County. The practice phone is (707) 995-5890.
- NPI Registry address2615 Chester Ave, Bakersfield, CA 93301 · Kern CountyPhone(707) 995-5890
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. John Hewitt's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Hewitt practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Hewitt's practice | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Hewitt is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Hewitt's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dmand AI has Dr. Hewitt's licenses on file in 5 states: California, Oregon, Alaska, North Carolina and New Hampshire.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- Oregon license
- Alaska license
- North Carolina license
- New Hampshire license
Emergency medicine physicians near Dr. Hewitt
Counts of emergency medicine physicians 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. John Hewitt billed Medicare for 41 services in 2016
CMS data shows 41 Medicare services from Dr. Hewitt across 2 procedure codes in 2016. Medicare paid $3,737 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 201641
Paid by Medicare$3,737
Procedure codes2
Dr. Hewitt compared with the California median for emergency medicine physicians, 2016
- Dr. Hewitt
- California median
- Medicare services
- 41vs 26585% below
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Hewitt's most billed Medicare procedure codes, 2016
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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
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Dr. John Hewitt has 149 publications on record
Dmand AI links 149 papers to Dr. Hewitt, published from 2010 to 2025. 2019 was the busiest year, with 18. The most frequent topics are Twins, Substance-Related Disorders and Genetic Predisposition to Disease. Dr. Hewitt has published most often in Behav Genet. Dr. Hewitt's most frequent co-authors are Laura J. Bierut, MD, Joel Gelernter, MD and Joseph Thomas Sakai, MD.
Papers149
Years published2010 to 2025
Dr. Hewitt's papers by year, 2016 to 2025
Topics Dr. Hewitt writes about most
- Twins
- Substance-Related Disorders
- Genetic Predisposition to Disease
- Phenotype
- Polymorphism, Single Nucleotide
- Cognition
- Executive Function
- Gene-Environment Interaction
Dr. Hewitt's most frequent co-authors
- Laura J. Bierut, MD8 shared papers
- Joel Gelernter, MD7 shared papers
- Joseph Thomas Sakai, MD7 shared papers
Recent publications by Dr. Hewitt
Int J Eat Disord
Body Mass IndexFeeding and Eating DisordersFeeding Behavior
See who Dr. Hewitt researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Hewitt works with, so you can find a warm path to the right emergency medicine physicians.
Sources: PubMed (National Library of Medicine); and Dmand AI Research Linkage
Dr. John Hewitt received $95 in industry payments from 2016 to 2025
CMS Open Payments shows 3 general payments to Dr. Hewitt from 2 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $68.
General payments to Dr. Hewitt by program year, 2016 to 2025
Companies that paid Dr. Hewitt 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. John Hewitt graduated from Universidad Autonoma de Guadalajara
Dr. Hewitt graduated from Universidad Autonoma de Guadalajara in 1975.
- Medical school
Source: Dmand AI Professional Profile Data
Dr. John Hewitt accepts plans from 1 insurance carrier
Dr. Hewitt is in network with 1 carrier, including AK State Medicaid. Medicaid plans come from the most carriers, 1. Check the plan with the practice before a visit.
- AK State Medicaid
Source: Dmand AI Insurance Network Data
Sources for Dr. John Hewitt'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 |
| 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 |
| 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. John Hewitt
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. John Hewitt's NPI number?
Dr. John Hewitt's NPI number is 1902840176. It was assigned on June 16, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. John Hewitt?
Dr. John Hewitt is an emergency medicine physician in Bakersfield, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. John Hewitt practice?
Dr. Hewitt practices at 2615 Chester Ave, Bakersfield, CA 93301.
What is Dr. John Hewitt's office phone number?
The practice phone on file for Dr. Hewitt is (707) 995-5890.
What is Dr. John Hewitt's medical license number?
Dr. Hewitt holds California license A31314, one of the licenses on file in 5 states.
Which states has Dr. John Hewitt been licensed in?
Dmand AI has state licenses on file for Dr. Hewitt in California (1977 to 2026), Oregon (1989 to 2017), Alaska (2014 to 2016), North Carolina (2009 to 2016) and New Hampshire (2012 to 2016).
Does Dr. John Hewitt accept Medicare?
Yes. CMS data shows Dr. Hewitt billed Medicare for 41 services in 2016.
What services does Dr. John Hewitt bill to Medicare?
In 2016, Dr. Hewitt's most billed Medicare services were emergency department visit (99283) and emergency department visit (99284).
Where did Dr. John Hewitt go to medical school?
Dr. Hewitt graduated from Universidad Autonoma de Guadalajara in 1975.
Has Dr. John Hewitt received payments from drug or device companies?
CMS Open Payments shows $95 in general payments to Dr. Hewitt from 2 companies from 2016 to 2025. The largest total came from Abbvie Inc.
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How long has Dr. John Hewitt been practicing?
Dr. Hewitt graduated from medical school in 1975, 51 years ago.
Does Dr. John Hewitt do research?
Dmand AI links 149 publications to Dr. Hewitt, published from 2010 to 2025.
Who does Dr. John Hewitt publish with?
Dr. Hewitt's most frequent co-authors are Laura J. Bierut, MD (8 shared papers), Joel Gelernter, MD (7 shared papers) and Joseph Thomas Sakai, MD (7 shared papers).
What insurance does Dr. John Hewitt accept?
Dr. Hewitt is in network with 1 carrier, including AK State Medicaid. Medicaid plans come from the most carriers, 1. Check the plan with the practice before a visit.
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