Dr. Joanna Marie Davies, MD
- Medicare services, 2023
- 1,236
- Part D claims, 2024
- 40
- Industry payments
- $10,968
- Affiliated sites
- 1
- Medical groups
- 2
- Practice address
- 1136 W 6th St, Los Angeles, CA 90017
- Practice phone
- Call (213) 977-1144
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Cardiology Internal Medical Group - Los Angeles (W 6th St)
Primary care practice · Los Angeles, California
Find Dr. Davies' 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. Joanna Marie Davies is a rheumatologist in Reseda, California
Dr. Davies practices at Cardiology Internal Medical Group - Los Angeles (W 6th St) in Los Angeles, California.
Dr. Davies' NPI, 1699746958, was assigned on January 26, 2006. Dr. Davies graduated from Keck School of Medicine of USC in 1982. Dr. Davies holds California license G51148.
- NPI
- 1699746958NPI Registry (opens in a new tab)
- NPI enumeration date
- January 26, 2006
- NPI status
- Active
- Practice phone
- (213) 977-1144
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 70
- Medical school graduation
- 1982
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Joanna Marie Davies practices in Los Angeles and Reseda
Dr. Davies' primary practice is Cardiology Internal Medical Group - Los Angeles (W 6th St), at 1136 W 6th St, Los Angeles, CA 90017. The practice phone is (213) 977-1144. The NPI Registry lists Dr. Davies' practice address as 18747 W Sherman Way, Reseda, CA 91335.
- Cardiology Internal Medical Group - Los Angeles (W 6th St)Primary1136 W 6th St, Los Angeles, CA 90017Phone(213) 977-1144
- NPI Registry address18747 W Sherman Way, Reseda, CA 91335 · Los Angeles CountyPhone(213) 977-1144
Sources: NPPES NPI Registry (CMS); Dmand AI Affiliation Data; Doctors and Clinicians National Downloadable File (CMS); and Dmand AI Practice Data
Dr. Joanna Marie Davies is affiliated with 1 site of care and 2 medical groups
Dr. Davies' primary practice is Cardiology Internal Medical Group - Los Angeles (W 6th St) in Los Angeles, California. The medical group on file is USC Care Medical Group. Dmand AI also links Dr. Davies to 1 more medical group, named with a free account.
Sources: Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dmand AI tracks the EHR system at Dr. Joanna Marie Davies' practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Davies practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Cardiology Internal Medical Group - Los Angeles (W 6th St) | Available with a free account |
| +1 medical group | 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 each health system and 6.2K+ hospitals, with verified contacts in the same login.
Dr. Joanna Marie Davies is one of 821 rheumatologists in California
Rheumatology is Dr. Davies' primary specialty in the NPI Registry, under taxonomy code 207RR0500X. Dr. Davies is board certified in internal medicine by the American Board of Internal Medicine. Dr. Davies is licensed in California.
Specialties and state licenses
- Rheumatology, CaliforniaPrimary
Clinical focus
Dmand AI lists asthma, atrial fibrillation and flutter, bursitis, carpal tunnel syndrome, chronic diabetes, chronic hypertension, coronary artery disease and gout among the conditions Dr. Davies treats.
Rheumatologists near Dr. Davies
Counts of rheumatologists 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. Joanna Marie Davies billed Medicare for 1,236 services in 2023
CMS data shows 1,236 Medicare services from Dr. Davies across 26 procedure codes in 2023. Medicare paid $27,279 for them. Every service was in an office.
Dr. Davies' Medicare services by type, 2022 to 2023
- 2022
- 2023
- Lab and pathology
- 2022: 2,0762023: 72365%
- Office and hospital visits
- 2022: 3842023: 19649%
- Imaging
- 2022: 3782023: 12068%
- Surgery
- 2022: 2372023: 9361%
- Tests and treatments
- 2022: 2672023: 8070%
- Other services
- 2022: 1642023: 2485%
Dr. Davies compared with the California median for rheumatologists, 2023
- Dr. Davies
- California median
- Medicare services
- 1,236vs 90037% above
- Part D claims
- 1,034vs 9627% above
Medians across 773 rheumatologists in California with Dmand AI profiles that report each measure.
Dr. Davies' most billed Medicare procedure codes, 2023
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. Davies?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Davies and other rheumatologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Joanna Marie Davies' patients have a median age of 72
Across all payers, Dmand AI patient panel data puts Dr. Davies' median patient age at 72, with 76% women.
Dr. Davies' patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 72
Patient panel by sex, all payers
- Women76%
- Men22%
Source: Dmand AI Patient Panel Data
Dr. Joanna Marie Davies wrote 40 Medicare Part D claims in 2024
In 2024, Dr. Davies wrote 40 Medicare Part D claims for 13 patients. 98% of them were for generic drugs. They cover 40 drugs, with $23,450 in total drug cost. In 2022, CMS named 2,811 claims across 74 drugs.
Dr. Davies' Part D claims by kind of drug, 2024
- Generic39 claims98%
- Brand-name and other1 claims3%
Dr. Davies' most prescribed drugs by claims, 2023
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, 2022 to 2023
- 2022
- 2023
- Claims for drugs CMS names
- 2022: 2,8112023: 1,03463%
Drugs named by CMS: 40 in 2023, 74 in 2022.
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
For MedTech and pharma teams
Filter 7.4M+ HCPs by Medicare procedures, Part D drugs and Open Payments history, then reach them with verified contacts in one login.
Dr. Joanna Marie Davies received $10,968 in industry payments from 2016 to 2025
CMS Open Payments shows 626 general payments to Dr. Davies from 39 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 98% of the total. Amgen Inc. paid the most, $2,034.
General payments to Dr. Davies by program year, 2016 to 2025
General payments to Dr. Davies by kind, 2016 to 2025
- Food and beverage$10,76298%
- Education$2062%
Companies that paid Dr. Davies 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. Joanna Marie Davies has 1 award and honors on record
Dmand AI lists 1 award for Dr. Davies, most recently CMS Stage 1 EHR in 2014.
Awards and honors for Dr. Davies
- 2014
- CMS Stage 1 EHR
Source: Dmand AI Professional Profile Data
Dr. Joanna Marie Davies graduated from Keck School of Medicine of USC
Dr. Davies graduated from Keck School of Medicine of USC in 1982.
- Medical school
- Board certified in internal medicine
- Board certified in rheumatology
Source: Dmand AI Professional Profile Data
Dr. Joanna Marie Davies accepts plans from 6 insurance carriers
Dr. Davies is in network with 6 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and Elevance. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
- Blue Cross Blue Shield of Michigan
- Blue Cross Blue Shield of Massachusetts
- Elevance
- HCSC
- Regence Health Plans
- Molina
Plan types Dr. Davies accepts, by number of carriers
- Medicare5
- PPO5
- HMO2
- POS1
Source: Dmand AI Insurance Network Data
Sources for Dr. Joanna Marie Davies'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 Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| 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) |
| 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. Joanna Marie Davies
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. Joanna Marie Davies' NPI number?
Dr. Joanna Marie Davies' NPI number is 1699746958. It was assigned on January 26, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Joanna Marie Davies?
Dr. Joanna Marie Davies is a rheumatologist in Reseda, California. The primary specialty in the NPI Registry is Rheumatology Physician (taxonomy code 207RR0500X).
Where does Dr. Joanna Marie Davies practice?
Dr. Davies practices at 1136 W 6th St, Los Angeles, CA 90017. Dr. Davies also practices at 18747 W Sherman Way, Reseda, CA 91335. Dr. Davies' primary practice is Cardiology Internal Medical Group - Los Angeles (W 6th St) in Los Angeles, California. Dmand AI also links Dr. Davies to 1 medical group.
What is Dr. Joanna Marie Davies' office phone number?
The practice phone on file for Dr. Davies is (213) 977-1144.
What is Dr. Joanna Marie Davies' medical license number?
Dr. Davies holds California license G51148.
What medical group is Dr. Joanna Marie Davies part of?
Dr. Davies is linked to USC Care Medical Group. Dmand AI links Dr. Davies to 1 more medical group.
Does Dr. Joanna Marie Davies accept Medicare?
Yes. CMS data shows Dr. Davies billed Medicare for 1,236 services in 2023.
Is Dr. Joanna Marie Davies board certified?
Yes. Dr. Davies is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. Joanna Marie Davies bill to Medicare?
In 2023, Dr. Davies' most billed Medicare services were office visit, established patient (99214), surgery: heart and blood vessels (36415) and lab and pathology test (85025).
Where did Dr. Joanna Marie Davies go to medical school?
Dr. Davies graduated from Keck School of Medicine of USC in 1982.
Show 4 more questionsShow fewer questions
What drugs does Dr. Joanna Marie Davies prescribe most?
In 2023 Medicare Part D data, Dr. Davies' most prescribed drugs by claims were Atorvastatin Calcium, Amlodipine Besylate and Losartan Potassium.
Has Dr. Joanna Marie Davies received payments from drug or device companies?
CMS Open Payments shows $10,968 in general payments to Dr. Davies from 39 companies from 2016 to 2025. The largest total came from Amgen Inc.
How long has Dr. Joanna Marie Davies been practicing?
Dr. Davies graduated from medical school in 1982, 44 years ago.
What insurance does Dr. Joanna Marie Davies accept?
Dr. Davies is in network with 6 carriers, including Blue Cross Blue Shield of Michigan, Blue Cross Blue Shield of Massachusetts and Elevance. Medicare plans come from the most carriers, 5. Check the plan with the practice before a visit.
Selling to rheumatology practices?
See rheumatologists 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