Keren Mariam John, PA- CERTIFIED
Physician Assistant · New London, CT
Keren Mariam John, PA- CERTIFIED is a physician assistant with a practice address in New London, Connecticut, and NPI 1285190462, issued on Feb 13, 2019. Check the license (Connecticut 4523, as entered in NPPES) with the Connecticut board that licenses this profession; the Medicare figures below come from public CMS files.
- Name
- Keren Mariam John
- Credential
- PA- CERTIFIED
- Primary taxonomy
- Physician Assistant 363A00000X
- License numbers
- 4523 CT
0010-14522 NC
Self-reported in NPPES; status is on the state search - Practice location
- 365 Montauk Ave, New London, CT 06320
- Phone
- (860) 442-0711
- Enumerated
- Feb 13, 2019
- Record last updated
- Aug 15, 2025
- Medicare enrollment
- Enrolled (PECOS I20250312002803); accepts Medicare assignment
- Entity
- Type 1 · individual
8 nearest physician assistant records → All 2,047 in Connecticut → Look up another NPI →
Also registered at 365 Montauk Ave
A shared address usually means a shared clinic or building; it does not show who employs whom.
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- Tyler Ackley, PHARMDPharmacist1326632514
- Luke Ackroyd, CRNACertified Registered Nurse Anesthetist1982640348
- Theresa Adams, M.D.Emergency Medicine Physician1457678138
- Syeda Kanza AfzalInternal Medicine Physician1043943046
Verify Keren Mariam John in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich Connecticut board licenses this profession
Search for license 4523Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
55% more Medicare Part D claims than the average physician assistant in 2024
1,286 Medicare Part D claims for 162 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. Brand-name drugs were 21% of claims.
Most prescribed
- Atorvastatin Calcium89 claims
- Albuterol Sulfate Hfa51 claims
- Metformin Hcl49 claims
- Lisinopril42 claims
- Amlodipine Besylate41 claims
- Gabapentin39 claims
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: $15.50
1 payment: food and beverage; the largest payer was Phadia US Inc. The 64,719 providers of this specialty with any payment received $841.65 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.
Bills Medicare through one group practice
- Fastmed PCRaleigh, NC
Source: CMS Doctors and Clinicians National Downloadable File (the group practices a clinician bills Medicare through) (data.cms.gov).
Keren Mariam John among 2,047 physician assistant records in Connecticut
Keren Mariam John, PA- CERTIFIED is one of 2,047 physician assistant records with a practice address in Connecticut. 78% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does. Its NPI, issued in 2019, is newer than 55% of them.
- NPI issued2019 · 55% of these records are older, 40% newer
- In a Medicare fileYes · 78% of these records are
- In the CMS Doctors and Clinicians fileYes · 65% of these records are
- Graduated2021 · median 2018 among the 1,338 with a school on file
- Record last updated2025 · 42% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 363A00000X and a Connecticut practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
45 physician assistant records list a practice address in New London
They are 45 of the 1,218 NPPES records with a practice address in New London, and 2,047 physician assistant records in Connecticut.
All 2,047 in Connecticut → Every provider in New London → Physician Assistant nationwide →
The 8 physician assistant records with the nearest ZIP codes
- Seth Dubin, PA-CNew London, CT 063201619308178
- Alexander Ejzak, P.A.New London, CT 063201083860761
- Kate Felter, PA-CNew London, CT 063201194033738
- Ellen Gingerella, PA-CNew London, CT 063201790062768
- Robert Ginther, PANew London, CT 063201568891729
- Katheryn Grossman, PA-CNew London, CT 063201124370275
- John Kawa, PA-CNew London, CT 063201366722456
- Alan Lozano, PA-CNew London, CT 063201275843633
Common questions
What is Keren Mariam John, PA- CERTIFIED's NPI number?
Keren Mariam John, PA- CERTIFIED's National Provider Identifier (NPI) is 1285190462, issued on Feb 13, 2019. An NPI identifies a provider in billing; it is not a license.
Where is Keren Mariam John, PA- CERTIFIED located?
The NPPES record lists a practice address at 365 Montauk Ave, New London, CT, 06320. Phone: (860) 442-0711. Providers update this record themselves, so call before visiting.
How can I verify Keren Mariam John, PA- CERTIFIED's license?
NPPES lists Connecticut license number 4523, as entered by the provider. Search the Connecticut board that licenses this profession; the NPPES record confirms identity only.
How much does Keren Mariam John, PA- CERTIFIED prescribe under Medicare Part D?
In 2024, Keren Mariam John, PA- CERTIFIED had 1,286 Medicare Part D claims for 162 beneficiaries; the average among physician assistant prescribers was 830. 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.