Joanna Marie Davies, M.D.
Rheumatology Physician · Los Angeles, CA
Joanna Marie Davies, M.D. is a rheumatology physician with a practice address in Los Angeles, California, and NPI 1699746958, issued on Jan 26, 2006. Check the license (California G51148, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Joanna Marie Davies
- Credential
- M.D.
- Primary taxonomy
- Rheumatology Physician 207RR0500X
- License number
- G51148 CA
Self-reported in NPPES; status is on the state search - Practice location
- 1136 W 6TH St, Los Angeles, CA 90017
- Phone
- (213) 977-1144
- Enumerated
- Jan 26, 2006
- Record last updated
- Jul 13, 2026
- Fax
- (213) 482-2182
- Entity
- Type 1 · individual
8 nearest rheumatology physician records → All 926 in California → Look up another NPI →
Also registered at 1136 W 6TH St
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Stuart Willson, M.D.Internal Medicine Physician1841262045
Verify Joanna Marie Davies in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license G51148Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
98% fewer Medicare Part D claims than the average rheumatology physician in 2024
40 Medicare Part D claims for 13 beneficiaries, against an average of 1,978 among the 6,301 providers of this specialty who prescribed in Part D.
Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.
Industry payments in 2024: $151.41
8 payments; by number, the most common kind was food and beverage; the largest payer was Novo Nordisk Inc. The 4,486 providers of this specialty with any payment received $8,538.33 on average. Payments are reported by manufacturers, not by the provider, and are not a sign of wrongdoing.
Source: CMS Open Payments, program year 2024 (openpaymentsdata.cms.gov); average among providers of this specialty with at least one payment.
Joanna Marie Davies among 926 rheumatology physician records in California
Joanna Marie Davies, M.D. is one of 926 rheumatology physician records with a practice address in California. 81% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2006, is newer than 6% of them.
- NPI issued2006 · 6% of these records are older, 55% newer
- In a Medicare fileYes · 81% of these records are
- In the CMS Doctors and Clinicians fileNo · 69% of these records are
- Record last updated2026 · 62% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207RR0500X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Rheumatology Physician providers in California
There are 926 rheumatology physician records in California.
All 926 in California → Every provider in Los Angeles → Rheumatology Physician nationwide →
The 8 rheumatology physician records with the nearest ZIP codes
- Stephen Bland, MDLos Angeles, CA 900171821002627
- Brendan Cerk, MDLos Angeles, CA 900171558716357
- Wagdy Kades, M.D.Los Angeles, CA 900171326080060
- Chen Xie, M.D.Los Angeles, CA 900171528452448
- Alexander Ruggieri, M.D.Los Angeles, CA 900151780028209
- Louis Zucker, MDLos Angeles, CA 900151124128145
- Brian Huh, M.D.Los Angeles, CA 900201275614455
- Sonwoo Lee, MDLos Angeles, CA 900201336168616
Common questions
What is Joanna Marie Davies, M.D.'s NPI number?
Joanna Marie Davies, M.D.'s National Provider Identifier (NPI) is 1699746958, issued on Jan 26, 2006. An NPI identifies a provider in billing; it is not a license.
Where is Joanna Marie Davies, M.D. located?
The NPPES record lists a practice address at 1136 W 6TH St, Los Angeles, CA, 90017. Phone: (213) 977-1144. Providers update this record themselves, so call before visiting.
How can I verify Joanna Marie Davies, M.D.'s license?
NPPES lists California license number G51148, as entered by the provider. Search the Medical Board of California at https://www.mbc.ca.gov/License-Verification/default.aspx. The NPPES record confirms identity only; the state search shows license status, expiration and public orders.
How much does Joanna Marie Davies, M.D. prescribe under Medicare Part D?
In 2024, Joanna Marie Davies, M.D. had 40 Medicare Part D claims for 13 beneficiaries; the average among rheumatology physician prescribers was 1,978. Part D covers Medicare prescriptions only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.