Catheter-Related InfectionsCross InfectionLeadership
Dr. Charles S. Merriman, MD
NPI1841200235
- Medicare services, 2020
- 426
- Part D claims, 2020
- 116
- Publications
- 2
- Industry payments
- $105
- Insurance carriers
- 3
- Practice address
- 1531 Esplanade, Chico, CA 95926-3310
- Practice phone
- Call (530) 332-6337
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Find Dr. Merriman'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 S. Merriman is an emergency medicine physician in Chico, California
Dr. Merriman practices in Chico, California.
Dr. Merriman's NPI, 1841200235, was assigned on August 8, 2006. Dr. Merriman graduated from UNR Med in 1991. Dr. Merriman holds California license G078364.
NPI and contact details
- NPI
- 1841200235NPI Registry (opens in a new tab)
- NPI enumeration date
- August 8, 2006
- NPI status
- Active
- Practice phone
- (530) 332-6337
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Medical school graduation
- 1991
Sources: NPPES NPI Registry (CMS); and Dmand AI Professional Profile Data
Dr. Charles S. Merriman's practice address is in Chico, California
Dr. Merriman's practice address in the NPI Registry is 1531 Esplanade, Chico, CA 95926-3310. The practice phone is (530) 332-6337.
- NPI Registry address1531 Esplanade, Chico, CA 95926-3310Phone(530) 332-6337
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dmand AI tracks the EHR system at Dr. Charles S. Merriman's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Merriman practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Dr. Merriman's practice | Available with a free account |
Source: Dmand AI Technology Install Data
For health IT teams
See the EHR and IT leaders at every site where Dr. Merriman practices
Dmand AI maps EHR vendors, IT decision makers and buying committees across each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Charles S. Merriman is one of 7,423 emergency medicine physicians in California
Emergency medicine is Dr. Merriman's primary specialty in the NPI Registry, under taxonomy code 207P00000X. Dr. Merriman is board certified in emergency medicine by the American Board of Emergency Medicine. Dmand AI has Dr. Merriman's licenses on file in 3 states: California, Nevada and Oregon.
Specialties and state licenses
- Emergency medicine, CaliforniaPrimary
- Nevada license
- Oregon license
Emergency medicine physicians near Dr. Merriman
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. Charles S. Merriman billed Medicare for 426 services in 2020
CMS data shows 426 Medicare services from Dr. Merriman across 4 procedure codes in 2020. Medicare paid $46,856 for them. Every service was in a facility, such as a hospital, rather than an office.
Medicare services, 2020426
Paid by Medicare$46,856
Procedure codes4
Dr. Merriman's Medicare services by type, 2019 to 2020
- 2019
- 2020
- Office and hospital visits
- 2019: 6962020: 42639%
Dr. Merriman compared with the California median for emergency medicine physicians, 2020
- Dr. Merriman
- California median
- Medicare services
- 426vs 26561% above
- Part D claims
- 116vs 6287% above
Medians across 7,079 emergency medicine physicians in California with Dmand AI profiles that report each measure.
Dr. Merriman'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. Merriman?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Merriman and other emergency medicine physicians in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Charles S. Merriman's patients have a median age of 88
Across all payers, Dmand AI patient panel data puts Dr. Merriman's median patient age at 88, with 0% women.
Dr. Merriman's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 88
Patient panel by sex, all payers
- Women0%
- Men100%
Source: Dmand AI Patient Panel Data
Dr. Charles S. Merriman wrote 116 Medicare Part D claims in 2020
In 2020, Dr. Merriman wrote 116 Medicare Part D claims. They cover 5 drugs, with $552 in total drug cost. In 2019, CMS named 190 claims across 9 drugs.
Part D claims, 2020116
Drugs named by CMS5
Total drug cost$552
Dr. Merriman's most prescribed drugs by claims, 2020
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, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 1902020: 11639%
Drugs named by CMS: 5 in 2020, 9 in 2019.
Source: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026
For MedTech and pharma teams
Find emergency medicine physicians like Dr. Merriman by procedure volume and prescribing
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Charles S. Merriman has 2 publications on record
Dmand AI links 2 papers to Dr. Merriman in 2013. Dr. Merriman's most frequent co-authors are Peter Tod Magnusson, MD, Julie Wong Martin, MD and Marcia F. Nelson, MD.
Papers2
Dr. Merriman's most frequent co-authors
- Peter Tod Magnusson, MD1 shared paper
- Julie Wong Martin, MD1 shared paper
- Marcia F. Nelson, MD1 shared paper
Recent publications by Dr. Merriman
See who Dr. Merriman researches with
Physician Network Discovery turns co-authorship, shared hospitals and shared groups into a map of who Dr. Merriman 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. Charles S. Merriman received $105 in industry payments from 2016 to 2020
CMS Open Payments shows 2 general payments to Dr. Merriman from 2 drug and device companies from 2016 to 2020. Food and beverage make up the largest share, 100% of the total. St. Jude Medical, Inc. paid the most, $87.
General payments to Dr. Merriman by program year, 2016 to 2020
Companies that paid Dr. Merriman 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. Charles S. Merriman graduated from UNR Med
Dr. Merriman graduated from UNR Med in 1991.
- Medical school
- Board certified in emergency medicine
Source: Dmand AI Professional Profile Data
Dr. Charles S. Merriman accepts plans from 3 insurance carriers
Dr. Merriman is in network with 3 carriers, including Excellus BlueCross BlueShield, United Healthcare and Blue Cross and Blue Shield of Kansas City. EPO plans come from the most carriers, 2. Check the plan with the practice before a visit.
- Excellus BlueCross BlueShield
- United Healthcare
- Blue Cross and Blue Shield of Kansas City
Plan types Dr. Merriman accepts, by number of carriers
- EPO2
- HMO2
- Medicare2
- POS2
- PPO2
Source: Dmand AI Insurance Network Data
Sources for Dr. Charles S. Merriman'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 |
| 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. Charles S. Merriman
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 S. Merriman's NPI number?
Dr. Charles S. Merriman's NPI number is 1841200235. It was assigned on August 8, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Charles S. Merriman?
Dr. Charles S. Merriman is an emergency medicine physician in Chico, California. The primary specialty in the NPI Registry is Emergency Medicine Physician (taxonomy code 207P00000X).
Where does Dr. Charles S. Merriman practice?
Dr. Merriman practices at 1531 Esplanade, Chico, CA 95926-3310.
What is Dr. Charles S. Merriman's office phone number?
The practice phone on file for Dr. Merriman is (530) 332-6337.
What is Dr. Charles S. Merriman's medical license number?
Dr. Merriman holds California license G078364, one of the licenses on file in 3 states.
Which states has Dr. Charles S. Merriman been licensed in?
Dmand AI has state licenses on file for Dr. Merriman in California (1994 to 2026), Nevada (2003 to 2027) and Oregon (1992 to 2021).
Does Dr. Charles S. Merriman accept Medicare?
Yes. CMS data shows Dr. Merriman billed Medicare for 426 services in 2020.
Is Dr. Charles S. Merriman board certified?
Yes. Dr. Merriman is board certified in emergency medicine by the American Board of Emergency Medicine.
What services does Dr. Charles S. Merriman bill to Medicare?
In 2020, Dr. Merriman's most billed Medicare services were emergency department visit (99285), emergency department visit (99284) and emergency department visit (99283).
Where did Dr. Charles S. Merriman go to medical school?
Dr. Merriman graduated from UNR Med in 1991.
Show 6 more questionsShow fewer questions
What drugs does Dr. Charles S. Merriman prescribe most?
In 2020 Medicare Part D data, Dr. Merriman's most prescribed drugs by claims were Cephalexin, Hydrocodone-Acetaminophen and Prednisone.
Has Dr. Charles S. Merriman received payments from drug or device companies?
CMS Open Payments shows $105 in general payments to Dr. Merriman from 2 companies from 2016 to 2020. The largest total came from St. Jude Medical, Inc.
How long has Dr. Charles S. Merriman been practicing?
Dr. Merriman graduated from medical school in 1991, 35 years ago.
Does Dr. Charles S. Merriman do research?
Dmand AI links 2 publications to Dr. Merriman.
Who does Dr. Charles S. Merriman publish with?
Dr. Merriman's most frequent co-authors are Peter Tod Magnusson, MD (1 shared paper), Julie Wong Martin, MD (1 shared paper) and Marcia F. Nelson, MD (1 shared paper).
What insurance does Dr. Charles S. Merriman accept?
Dr. Merriman is in network with 3 carriers, including Excellus BlueCross BlueShield, United Healthcare and Blue Cross and Blue Shield of Kansas City. EPO plans come from the most carriers, 2. Check the plan with the practice before a visit.
Selling to emergency medicine practices?
See emergency medicine physicians in California by site of care and group
Find the practices, groups and hospitals they work with, and the right people to contact at each.
- 30 days free
- Self-serve
- No credit card