Doctor profile · Federal record

Dr. Thomas Conklin, M.D.

Adult Medicine Physician (CMS: Family Practice) · Northridge, CA

  • NPI 1124066436
  • Accepts Medicare
  • MIPS 7.2 / 100 · 2023
  • 48 yrs in practice
  • Male
  • Solo practice
  • No sanctions

Practice & contact

NPPES Updated May 11, 2026
Primary practice
18417 Nordhoff St, Suite# B
Northridge, CA 913252200
(818) 701-0551
fax (818) 701-5360
Mailing address
2650 Santa Ynez Ave
Simi Valley, CA 930632387

Credentials & registration

NPPES · NUCC
NPI registered
June 2006 — 20 yrs on file
Profile last updated
February 11, 2015
Year of graduation
1978 — 48 yrs since
Specialty taxonomy
207QA0505X — NUCC code
State license (1)
Massachusetts #156153

Federal sanctions & exclusions

OIG LEIE Updated May 11, 2026

No sanctions, exclusions or revocations on file

Checked against OIG LEIE on NPI 1124066436. Last verified May 11, 2026.

Medicare procedures · 2023

Top services delivered

CMS Provider Utilization
Total services
6,979
Distinct HCPCS
10
Medicare allowed
$793,306
HCPCS Description Services Patients Avg allowed
99214 Established patient office or other outpatient visit, 30-39 minutes 2,243 168 $139
99349 Residence visit for established patient with moderate level of medical decision making, per day, if using time, at least 40 minutes 971 35 $135
99212 Established patient office or other outpatient visit, 10-19 minutes 522 130 $62
99215 Established patient office or other outpatient visit, 40-54 minutes 467 134 $194
99213 Established patient office or other outpatient visit, 20-29 minutes 442 132 $98
99309 Subsequent nursing facility care with moderate level of medical decision making, per day, if using time, at least 30 minutes 326 22 $114
99443 Telephone medical discussion with physician, 21-30 minutes 292 112 $102
36415 Insertion of needle into vein for collection of blood sample 271 116 $8
99491 Chronic care management services for two or more chronic conditions, first 30 minutes provided personally by health care professional, per calendar month 259 115 $91
81000 Manual urinalysis test with examination using microscope, non-automated 199 111 $4

In context: peer comparison

Among 1 peers in this city , average services per provider: 279. This provider delivers 25× the peer median.

Open Payments

Industry payments received

CMS Open Payments
All-time total
$61
Transactions
2
Manufacturers
2
Payer (manufacturer) Industry Txns Amount
Boehringer Ingelheim Pharmaceuticals, Inc. 1 $33.94
Exact Sciences Corporation 1 $26.68

By nature of payment

Food and Beverage
$61

Medicare Part D · 2023

Top prescriptions

CMS Part D Prescriber
Total claims
1,353
Patients
356
Total drug cost
$97,532
Drug Type Claims Patients Total cost
Atorvastatin Calcium Generic 272 59 $3,549
Fluticasone Propionate Generic 146 58 $2,323
Levothyroxine Sodium Generic 125 25 $1,968
Losartan Potassium Generic 100 22 $1,720
Amlodipine Besylate Generic 85 20 $1,305
Metformin Hcl Generic 76 22 $895
Eliquis (Apixaban) Brand 74 14 $76,280
Azithromycin Generic 72 49 $528
Omeprazole Generic 65 15 $1,322
Mirtazapine Generic 62 11 $993

Frequently asked questions

Auto-generated from federal data
What is Dr. Thomas Conklin's medical specialty?
Dr. Thomas Conklin practices Adult Medicine Physician in Northridge, CA.
Where does Dr. Thomas Conklin practice?
Dr. Thomas Conklin practices at 18417 Nordhoff St, Northridge, CA 913252200. Office phone: 8187010551.
What is Dr. Thomas Conklin's NPI?
Dr. Thomas Conklin's National Provider Identifier (NPI) is 1124066436, issued by NPPES.
Does Dr. Thomas Conklin accept Medicare assignment?
Yes. Dr. Thomas Conklin accepts Medicare assignment, meaning Medicare-allowed amounts are accepted as full payment for covered services.
What procedures does Dr. Thomas Conklin commonly perform?
Top Medicare-reported procedures in 2023: Established patient office or other outpatient visit (HCPCS 99214); Residence visit for established patient with moderate level of medical decision making (HCPCS 99349); Established patient office or other outpatient visit (HCPCS 99212). Source: CMS Medicare Physician & Other Practitioners file.