Dr. Charles Guido Cox, MD
- Medicare services, 2020
- 79
- Part D claims, 2024
- 48
- Hospital affiliations
- 1
- Industry payments
- $103
- Medical groups
- 3
- Practice address
- 500 First Avenue, Portola, CA 96122
- Practice phone
- Call (530) 832-6500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Find Dr. Cox'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. Charles Guido Cox is a gastroenterologist in Portola, California
Dr. Cox practices at Eastern Plumas Health Care in Portola, California, part of Eastern Plumas Health Care.
Dr. Cox's NPI, 1760467443, was assigned on December 14, 2005. Dr. Cox graduated from Drexel University College Of Medicine in 1978. Dr. Cox's Texas license number on file is R0379.
- NPI
- 1760467443NPI Registry (opens in a new tab)
- NPI enumeration date
- December 14, 2005
- NPI status
- Active
- Practice phone
- (530) 832-6500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 74
- Medical school graduation
- 1978
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Affiliation Data
Dr. Charles Guido Cox practices at Eastern Plumas Health Care in Portola, California
Dr. Cox's primary practice is Eastern Plumas Health Care, at 500 First Avenue, Portola, CA 96122 in Plumas County. The practice phone is (530) 832-6500.
- Eastern Plumas Health Care500 First Avenue, Portola, CA 96122 · Plumas CountyPhone(530) 832-6500
Source: Dmand AI Affiliation Data
Dr. Charles Guido Cox is affiliated with 2 sites of care and 3 medical groups
Dr. Cox's primary practice is Eastern Plumas Health Care in Portola, California, part of Eastern Plumas Health Care. The medical group on file is Eastern Plumas Health Care. Dmand AI also links Dr. Cox to 2 more medical groups and 1 group practice or clinic, each named with a free account. Dr. Cox's employer is on file too: a hospital.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Charles Guido Cox's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Cox practices, 2 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Eastern Plumas Health Care | Available with a free account |
| +1 more site and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
Dmand AI maps EHR vendors, IT decision makers and buying committees across Eastern Plumas Health Care and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Charles Guido Cox is one of 1,977 gastroenterologists in California
Gastroenterology is Dr. Cox's primary specialty in the NPI Registry, under taxonomy code 207RG0100X. Dr. Cox is board certified in gastroenterology by the American Board of Internal Medicine. Dmand AI has Dr. Cox's licenses on file in 11 states: Texas, Washington, California, Arizona, Utah, Michigan, North Carolina, Nevada, South Carolina, Colorado and Montana.
Specialties and state licenses
- Gastroenterology, TexasPrimary
- Washington license
- California license
- Arizona license
- Utah license
- Michigan license
- North Carolina license
- Nevada license
- South Carolina license
- Colorado license
- Montana license
Clinical focus
Dmand AI lists acid reflux, colonoscopy, gastroenteritis and upper GI endoscopy among the conditions Dr. Cox treats.
Gastroenterologists near Dr. Cox
Counts of gastroenterologists 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. Charles Guido Cox billed Medicare for 79 services in 2020
CMS data shows 79 Medicare services from Dr. Cox across 2 procedure codes in 2020. Medicare paid $10,527 for them. Every service was in a facility, such as a hospital, rather than an office.
Dr. Cox's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 772020: 5232%
- Surgery
- 2019: 392020: 2731%
Dr. Cox compared with the California median for gastroenterologists, 2020
- Dr. Cox
- California median
- Medicare services
- 79vs 58687% below
- Part D claims
- 16vs 38096% below
Medians across 1,875 gastroenterologists in California with Dmand AI profiles that report each measure.
Dr. Cox's most billed Medicare procedure codes, 2020
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. Cox?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Cox and other gastroenterologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Charles Guido Cox's patients have a median age of 47
Across all payers, Dmand AI patient panel data puts Dr. Cox's median patient age at 47, with 25% women.
Dr. Cox's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 47
Patient panel by sex, all payers
- Women25%
- Men75%
Source: Dmand AI Patient Panel Data
Dr. Charles Guido Cox wrote 48 Medicare Part D claims in 2024
In 2024, Dr. Cox wrote 48 Medicare Part D claims for 18 patients. 58% of them were for generic drugs. CMS names the drug for 16 of them, across 1 drug with 11 or more claims each, at $7,803 in total drug cost. In 2023, CMS named 15 claims across 1 drug.
Dr. Cox's Part D claims by kind of drug, 2024
- Generic28 claims58%
- Brand-name20 claims42%
Dr. Cox'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.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 152024: 167%
Drugs named by CMS: 1 in 2024, 1 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
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Dr. Charles Guido Cox received $103 in industry payments from 2017 to 2018
CMS Open Payments shows 2 general payments to Dr. Cox from 2 drug and device companies from 2017 to 2018. Food and beverage make up the largest share, 100% of the total. Intercept Pharmaceuticals, Inc. paid the most, $87.
General payments to Dr. Cox by program year, 2017 to 2018
Companies that paid Dr. Cox the most, 2017 to 2018
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Charles Guido Cox graduated from Drexel University College Of Medicine
Dr. Cox graduated from Drexel University College Of Medicine in 1978.
- Medical school
- Board certified in gastroenterology
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. Charles Guido Cox accepts plans from 16 insurance carriers
Dr. Cox is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- HCSC
- Alliant Health Plans
- Blue Cross Blue Shield of Massachusetts
- Elevance
- Regence Health Plans
- +8 more carriersWith a free account
Plan types Dr. Cox accepts, by number of carriers
- PPO10
- HMO9
- Medicare7
- POS4
- EPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Charles Guido Cox'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)Medicare Part D Prescribers - by Provider (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 |
| 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. Charles Guido Cox
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. Charles Guido Cox's NPI number?
Dr. Charles Guido Cox's NPI number is 1760467443. It was assigned on December 14, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. Charles Guido Cox?
Dr. Charles Guido Cox is a gastroenterologist in Portola, California. The primary specialty in the NPI Registry is Gastroenterology Physician (taxonomy code 207RG0100X).
Where does Dr. Charles Guido Cox practice?
Dr. Cox practices at 500 First Avenue, Portola, CA 96122. Dr. Cox's primary practice is Eastern Plumas Health Care in Portola, California, part of Eastern Plumas Health Care. Dmand AI also links Dr. Cox to 2 medical groups and 1 group practice or clinic.
What is Dr. Charles Guido Cox's office phone number?
The practice phone on file for Dr. Cox is (530) 832-6500.
What is Dr. Charles Guido Cox's medical license number?
Dr. Cox's Texas license number on file is R0379, one of the licenses on file in 11 states.
Which states has Dr. Charles Guido Cox been licensed in?
Dmand AI has state licenses on file for Dr. Cox in Texas (2016 to 2025), Washington, California (1979 to 2025), Arizona (2017 to 2020), Utah (2017 to 2020), Michigan (2015 to 2019), North Carolina (2017 to 2019), Nevada (1987 to 2019), South Carolina (2017 to 2019), Colorado (2013 to 2015) and Montana (2013 to 2015).
Which hospitals is Dr. Charles Guido Cox affiliated with?
Dr. Cox practices at Eastern Plumas Health Care in Portola, California.
What medical group is Dr. Charles Guido Cox part of?
Dr. Cox is linked to Eastern Plumas Health Care. Dmand AI links Dr. Cox to 2 more medical groups.
Does Dr. Charles Guido Cox accept Medicare?
Yes. CMS data shows Dr. Cox billed Medicare for 79 services in 2020.
Is Dr. Charles Guido Cox board certified?
Yes. Dr. Cox is board certified in gastroenterology by the American Board of Internal Medicine.
Show 6 more questionsShow fewer questions
What services does Dr. Charles Guido Cox bill to Medicare?
In 2020, Dr. Cox's most billed Medicare services were hospital inpatient care (99223) and surgery: digestive system (43239).
Where did Dr. Charles Guido Cox go to medical school?
Dr. Cox graduated from Drexel University College Of Medicine in 1978.
What drugs does Dr. Charles Guido Cox prescribe most?
In 2024 Medicare Part D data, Dr. Cox's most prescribed drugs by claims were Creon.
Has Dr. Charles Guido Cox received payments from drug or device companies?
CMS Open Payments shows $103 in general payments to Dr. Cox from 2 companies from 2017 to 2018. The largest total came from Intercept Pharmaceuticals, Inc.
How long has Dr. Charles Guido Cox been practicing?
Dr. Cox graduated from medical school in 1978, 48 years ago.
What insurance does Dr. Charles Guido Cox accept?
Dr. Cox is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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