Richard Kemp Massengill, M.D.
Ophthalmology Physician · Encinitas, CA
Richard Kemp Massengill, M.D. is an ophthalmology physician with a practice address in Encinitas, California, and NPI 1649320292, issued on Jan 12, 2007. Check the license (California C37189, as entered in NPPES) on the Medical Board of California; the Medicare figures below come from public CMS files.
- Name
- Richard Kemp Massengill
- Credential
- M.D.
- Primary taxonomy
- Ophthalmology Physician 207W00000X
- License number
- C37189 CA
Self-reported in NPPES; status is on the state search - Practice location
- 664 Hymettus Ave, Encinitas, CA 92024
- Phone
- (760) 390-1410
- Enumerated
- Jan 12, 2007
- Record last updated
- Mar 7, 2023
- Fax
- (760) 635-0611
- Entity
- Type 1 · individual
8 nearest ophthalmology physician records → All 2,899 in California → Look up another NPI →
Verify Richard Kemp Massengill in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersMedical Board of California
Search for license C37189Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
99% fewer Medicare Part D claims than the average ophthalmology physician in 2024
19 Medicare Part D claims, against an average of 1,518 among the 16,459 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.
Richard Kemp Massengill among 2,899 ophthalmology physician records in California
Richard Kemp Massengill, M.D. is one of 2,899 ophthalmology physician records with a practice address in California. 79% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2007, is newer than 55% of them.
- NPI issued2007 · 55% of these records are older, 33% newer
- In a Medicare fileYes · 79% of these records are
- In the CMS Doctors and Clinicians fileNo · 66% of these records are
- Record last updated2023 · 67% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 207W00000X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Ophthalmology Physician providers in California
There are 2,899 ophthalmology physician records in California.
All 2,899 in California → Every provider in Encinitas → Ophthalmology Physician nationwide →
The 8 ophthalmology physician records with the nearest ZIP codes
- Andre Aung, MDEncinitas, CA 920241750802880
- Michelle Crosby, M.D., PH.D.Encinitas, CA 920241558549303
- Srinivas Iyengar, MDEncinitas, CA 920241104030055
- Eric Johnston, MDEncinitas, CA 920241114916053
- Joan Kaestner, MDEncinitas, CA 920241184723728
- Jeffrey Morris, MDEncinitas, CA 920241093768186
- Arash Mozayan Isfahani, M.D.Encinitas, CA 920241093948176
- Ehsan Mozayan-Isfahani, MDEncinitas, CA 920241588924849
Common questions
What is Richard Kemp Massengill, M.D.'s NPI number?
Richard Kemp Massengill, M.D.'s National Provider Identifier (NPI) is 1649320292, issued on Jan 12, 2007. An NPI identifies a provider in billing; it is not a license.
Where is Richard Kemp Massengill, M.D. located?
The NPPES record lists a practice address at 664 Hymettus Ave, Encinitas, CA, 92024. Phone: (760) 390-1410. Providers update this record themselves, so call before visiting.
How can I verify Richard Kemp Massengill, M.D.'s license?
NPPES lists California license number C37189, 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 Richard Kemp Massengill, M.D. prescribe under Medicare Part D?
In 2024, Richard Kemp Massengill, M.D. had 19 Medicare Part D claims; the average among ophthalmology physician prescribers was 1,518. 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.