David Anthony Konzem , PA-C
Physician Assistant • Riverside, CA
2880 Hulen Pl
Riverside, CA 925072606
This profile restates public CMS/NPPES data; T-MedInfo gives no medical advice — consult a licensed professional, and call 911 for emergencies.
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NPI assigned on December 4, 2013; this date does not establish years in practice.
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Published CMS data list 454 Original Medicare Part B services in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Published rows only; this is not a quality measure.
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Published Part B service records, 2024:
- 99284 — Emergency department visit with moderate level of medical decision making: 210 service units.
- 99285 — Emergency department visit with high level of medical decision making: 127 service units.
- 99283 — Emergency department visit with low level of medical decision making: 71 service units.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Units differ by code; these are not visits or a measure of quality.
CPT® only copyright 2023 American Medical Association. All rights reserved. Service names are shortened from CPT Consumer Friendly Descriptors (CMS data, 2024). CPT notice
See all 5 records in the table · Guide: How to read Medicare Part B data
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Published CMS data list 542 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Naproxen — 74 prescription fills, including refills.
- Prednisone — 56 prescription fills, including refills.
- Cefdinir — 49 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 18 records in the table · Guide: How to read Medicare Part D prescriber data
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More Medicare Part B services than 65% of clinicians listed under Physician Assistant in Riverside, CA (2024, 36 clinicians with data). Median for this group: 177. Middle half: 103 to 735.
More Medicare Part B services than 70% of clinicians listed under Physician Assistant in California (2024, 4,833 clinicians with data). Median for this group: 198. Middle half: 71 to 535.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part B services went from 657 in 2020 to 454 in 2024.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2020–2024.
Practice Location & Contact Primary Location
2880 Hulen Pl
Riverside, CA 925072606
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
NPPES lists 1 additional practice-address record in Wilson, NC. See the list
Source: CMS NPPES NPI Registry, practice location records; release date unavailable.
Listings do not confirm current availability, employment or a shared ownership network.
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
Medicare patients
398 people with Original Medicare in 2024
It gives a sense of how many people with Medicare this clinician treated that year.
Source: CMS, Medicare Physician & Other Practitioners – by Provider, 2024.
Medicare-allowed amount
About $49,570 in 2024
The total amount Medicare approved for these services in 2024. It includes what Medicare paid and what patients or their other insurance owed, such as the deductible and coinsurance.
It shows the total cost of this clinician's Original Medicare services under Medicare's fee rules.
What this does not show: Medicare-allowed amount
This is not the clinician's income. Part of it can go to a clinic or group practice, staff, equipment or drugs. It is not the price you will pay.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
Paid by Medicare
About $38,203 in 2024
The part of the Medicare-allowed amount that Medicare itself paid in 2024, after patients' deductibles and coinsurance.
The gap between the allowed amount and this number is roughly what patients and their other insurance paid.
What this does not show: Paid by Medicare
This is not the clinician's income and not a measure of quality.
Source: CMS, Medicare Physician & Other Practitioners – by Provider and Service, 2024.
30-day fills
542 standardized 30-day fills in 2024
CMS converts prescriptions to 30-day supplies so they can be compared. A 90-day prescription counts as about three 30-day fills.
What this does not show: 30-day fills
It is not a count of patients and not a measure of quality.
Part D drug cost
$3,635 in 2024
The total cost of these prescriptions in 2024, paid by Medicare drug plans, patients and other payers together.
It shows the total spending on drugs this clinician prescribed, not what any one patient paid.
What this does not show: Part D drug cost
A higher cost often reflects the type of medicines a specialty uses. It is not your out-of-pocket cost and not a measure of quality.
Source: CMS, Medicare Part D Prescribers – by Provider and Drug, 2024.
Industry payments (Open Payments)
Fewer than 11 payment records totaling $19.96 in 2023
Drug and medical device companies must report certain payments to doctors and some other clinicians to CMS, such as meals, travel, speaking fees or research funding.
It shows reported financial ties between this clinician and companies. You can ask your clinician about them.
These records are submitted by drug and medical device companies, and a reported payment does not necessarily mean the financial relationship is improper.
General: payments not tied to research, such as meals, travel, consulting or speaking fees.
A reported payment does not necessarily mean the financial relationship is improper. Research payments can go to a hospital or university for a study the clinician leads, not to the clinician personally. Clinicians can dispute records with the company that reported them.
Source: CMS Open Payments, program year 2023.
NPI first issued
2013
The year this clinician's National Provider Identifier (NPI) was issued. An NPI is a unique 10-digit ID that US health care providers use for billing.
What this does not show: NPI first issued
NPIs have been issued only since 2005, so this year is not necessarily when the clinician started practicing.
Source: CMS NPPES NPI Registry.
Medicare assignment not listed
CMS data do not show whether this clinician accepts Medicare assignment. This does not mean they do not accept Medicare. Ask the office.
Medicare assignment applies to Original Medicare. It does not tell you whether the clinician is in a Medicare Advantage plan's network, accepts other insurance, or is taking new patients.
Source: CMS Doctors and Clinicians; Medicare.gov, “Does your provider accept Medicare as full payment?”
No telehealth indicator
CMS shows this indicator only when recent Medicare claims include telehealth services. The clinician may still offer telehealth; ask the office.
Source: CMS, Telehealth Indicator on Medicare Care Compare (fact sheet, January 2023); CMS Doctors and Clinicians.
Enrolled in Medicare (PECOS)
David Konzem has a Medicare enrollment record in PECOS, the CMS system clinicians use to enroll so they can bill Medicare or order services for people with Medicare.
It does not show whether the clinician accepts assignment, is in your plan's network, or is taking new patients.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Can order Medicare-covered services
CMS lists David Konzem as eligible to order or refer Medicare Part B clinical laboratory and imaging services, durable medical equipment (DME) and home health services for people with Medicare.
Medicare pays for these items and services only when they are ordered by an eligible clinician.
What this does not show: Can order Medicare-covered services
It does not mean the clinician offers these services directly.
Source: CMS Medicare Fee-For-Service Public Provider Enrollment (PECOS); CMS Order and Referring file.
Compared with the same specialty in Riverside and California
Billing and prescribing volume is not a quality rating.
Medicare Part B services
More Medicare Part B services than 65% of clinicians listed under Physician Assistant in Riverside, CA (2024, 36 clinicians with data). Median for this group: 177. Middle half: 103 to 735.
More Medicare Part B services than 70% of clinicians listed under Physician Assistant in California (2024, 4,833 clinicians with data). Median for this group: 198. Middle half: 71 to 535.
Medicare-allowed amount
A higher Medicare-allowed amount than 75% of clinicians listed under Physician Assistant in Riverside, CA (2024, 36 clinicians with data). Median for this group: $17,304. Middle half: $9,557 to $47,908.
A higher Medicare-allowed amount than 75% of clinicians listed under Physician Assistant in California (2024, 4,833 clinicians with data). Median for this group: $18,173. Middle half: $6,666 to $41,587.
Paid by Medicare
A higher Medicare payment amount than 80% of clinicians listed under Physician Assistant in Riverside, CA (2024, 36 clinicians with data). Median for this group: $11,637. Middle half: $6,309 to $32,810.
A higher Medicare payment amount than 75% of clinicians listed under Physician Assistant in California (2024, 4,833 clinicians with data). Median for this group: $13,209. Middle half: $4,792 to $30,879.
Medicare Part D prescriptions
Close to the middle for clinicians listed under Physician Assistant in Riverside, CA (2024, 76 clinicians with data). Median for this group: 484. Middle half: 173 to 1,018.
More Part D prescriptions than 65% of clinicians listed under Physician Assistant in California (2024, 7,516 clinicians with data). Median for this group: 229. Middle half: 72 to 718.
Part D drug cost
A lower Part D drug cost than 65% of clinicians listed under Physician Assistant in Riverside, CA (2024, 76 clinicians with data). Median for this group: $8,252. Middle half: $1,498 to $189,442.
Close to the middle for clinicians listed under Physician Assistant in California (2024, 7,516 clinicians with data). Median for this group: $3,945. Middle half: $709 to $60,209.
164 active clinicians are listed under Physician Assistant with a practice address in Riverside, CA (14,458 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Riverside
6.7% of these 164 clinicians have the CMS telehealth indicator.
39.6% of these 164 clinicians are listed by CMS as accepting Medicare assignment.
CMS data by year
Changes may reflect reporting, coverage or privacy limits, not changes in care quality.
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Medicare Part B services
Medicare Part B services decreased 31% from 657 in 2020 to 454 in 2024.
- 2020: 657
- 2021: 605
- 2022: 552
- 2023: 465
- 2024: 454
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Medicare-allowed amount
Medicare-allowed amount decreased 25% from $66,196 in 2020 to $49,570 in 2024.
- 2020: $66,196
- 2021: $61,741
- 2022: $52,777
- 2023: $45,854
- 2024: $49,570
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Paid by Medicare
Paid by Medicare decreased 22% from $49,111 in 2020 to $38,203 in 2024.
- 2020: $49,111
- 2021: $45,900
- 2022: $38,387
- 2023: $34,131
- 2024: $38,203
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Medicare Part D prescriptions
Medicare Part D prescriptions increased 92% from 282 in 2020 to 542 in 2024.
- 2020: 282
- 2021: 324
- 2022: 426
- 2023: 422
- 2024: 542
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30-day fills
30-day fills increased 91% from 284 in 2020 to 542 in 2024.
- 2020: 284
- 2021: 324
- 2022: 426
- 2023: 422
- 2024: 542
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Part D drug cost
Part D drug cost decreased 25% from $4,833 in 2020 to $3,635 in 2024.
- 2020: $4,833
- 2021: $3,408
- 2022: $3,921
- 2023: $3,686
- 2024: $3,635
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $30.96 in 2021 to $19.96 in 2023.
- 2021: $30.96
- 2022: $14.87
- 2023: $19.96
Sources: CMS Medicare Physician & Other Practitioners (2024), CMS Medicare Part D Prescribers (2024), CMS Open Payments (2023), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo · Report an error.
Pharma & Medical Device Financial Disclosures
Payments and other transfers of value that drug and medical device companies reported to CMS Open Payments
Program year 2023 (payments made January 1 – December 31, 2023): fewer than 11 records totaling $19.96.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| RARE DISEASE THERAPEUTICS, INC. |
Food and Beverage
In-kind items and services
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ANAVIP | General | $19.96 |
Source: CMS Open Payments, program year 2023, released June 30, 2026.
Performed Procedures & Service Volume
CPT® is a registered trademark of the American Medical Association. CPT codes, descriptions and other data only are copyright 2016–2023 American Medical Association. All rights reserved. Applicable FARS/HHSARS apply. Descriptions of CPT codes are the AMA's CPT Consumer Friendly Descriptors as published by CMS in the Medicare Physician & Other Practitioners – by Provider and Service data, 2017–2024; they are plain-language summaries, not for clinical coding or documentation. HCPCS Level II codes and descriptions are from CMS. Fee schedules, relative value units, conversion factors and/or related components are not assigned by the AMA, are not part of CPT, and the AMA is not recommending their use. The AMA does not directly or indirectly practice medicine or dispense medical services. The AMA assumes no liability for data contained or not contained herein.
| HCPCS Code | Services | Patients | Submitted Charge | Medicare Allowed |
|---|---|---|---|---|
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99284
Emergency department visit with moderate level of medical decision making
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210 | 195 | $472.88 | $101.24 |
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99285
Emergency department visit with high level of medical decision making
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127 | 120 | $832.91 | $146.77 |
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99283
Emergency department visit with low level of medical decision making
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71 | 67 | $264.30 | $59.36 |
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99291
Critical care, first 30-74 minutes
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28 | 28 | $926.57 | $172.45 |
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99282
Emergency department visit with straightforward medical decision making
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18 | 15 | $219.67 | $34.83 |
Source: CMS Part B by Provider and Service, 2024; services under 11 beneficiaries omitted by CMS. Privacy limits
Submitted charges are billed amounts, not a price quote for your visit.
Medicare Part D Prescribing Profile & Medications
Medicare Part D prescriptions filled, including refills, in 2024.
| Brand Name | Generic Name | Prescriptions | Day Supply | Total Cost | Patients |
|---|---|---|---|---|---|
| Naproxen | Naproxen | 74 | 1,116 | $665.77 | 71 |
| Prednisone | Prednisone | 56 | 338 | $111.71 | 56 |
| Cefdinir | Cefdinir | 49 | 311 | $672.10 | 49 |
| Methylprednisolone | Methylprednisolone | 45 | 285 | $321.27 | 45 |
| Hydrocodone-Acetaminophen | Hydrocodone/Acetaminophen | 44 | 120 | $177.82 | 44 |
| Ondansetron Odt | Ondansetron | 44 | 180 | $302.32 | 44 |
| Methocarbamol | Methocarbamol | 30 | 198 | $130.79 | 30 |
| Tizanidine Hcl | Tizanidine Hcl | 29 | 163 | $83.42 | 28 |
| Ibuprofen | Ibuprofen | 24 | 204 | $113.39 | 23 |
| Cephalexin | Cephalexin | 23 | 157 | $225.84 | 23 |
| Amoxicillin-Clavulanate Potass | Amoxicillin/Potassium Clav | 22 | 139 | $145.22 | 22 |
| Meclizine Hcl | Meclizine Hcl | 20 | 165 | $118.91 | 20 |
| Famotidine | Famotidine | 16 | 244 | $68.69 | 16 |
| Doxycycline Hyclate | Doxycycline Hyclate | 15 | 90 | $80.66 | 15 |
| Naproxen Sodium | Naproxen Sodium | 14 | 205 | $183.27 | 14 |
| Ciprofloxacin Hcl | Ciprofloxacin Hcl | 13 | 88 | $97.22 | 13 |
| Prochlorperazine Maleate | Prochlorperazine Maleate | 13 | 85 | $97.44 | 13 |
| Azithromycin | Azithromycin | 11 | 48 | $39.04 | 11 |
Source: CMS Part D by Provider and Drug, 2024; rows below 11 claims omitted by CMS; volume isn’t quality. Privacy limits
Specialties & License Numbers Reported to NPPES
Self-certified to NPPES: 2020-03-24NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
NUCC Taxonomy Code: 363A00000X
A physician assistant is a person who has successfully completed an accredited education program for physician assistant, is licensed by the state and is practicing within the scope of that license. Physician assistants are formally trained to perform many of the routine, time-consuming tasks a physician can do. In some states, they may prescribe medications. They take medical histories, perform physical exams, order lab tests and x-rays, and give inoculations. Most states require that they work under the supervision of a physician.
Medicare (PECOS) Enrollment & Ordering Eligibility
Source: CMS PECOSPRACTITIONER - PHYSICIAN ASSISTANT
I20180306001065
NC
4284912353
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
Secondary Practice Locations
1705 Tarboro St Sw
Wilson, NC 278933428
Phone: 2523998040
Clinicians Sharing This Practice Address or Phone
Clinicians sharing this NPPES address, phone or fax; a shared contact does not mean they work together.
Nurse Practitioner - Family
Nurse Practitioner
Family Medicine
Nurse Practitioner (Certified)
Nurse Practitioner - Family
Nurse Practitioner (Certified)
Career & Practice History
NPI enumerated December 04, 2013.
No changes to the name, practice address, taxonomy or NPI status in this record have been observed in the monthly NPPES data files from January 2017 to August 2026.
NPI Administrative Meta
Other Physician Assistants in Riverside
- Eleazar Dial, PA-C
- Brian Carrillo
- Michael Onoh, PA
- Eden Avila, PA-C
- Milan Vora, PA
- Fidelito Agcaoili, PA-C
More public profiles in California
Directory navigation, in NPI number order.
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- Taylor Hawes, PT, DPT Physical Therapist · Moorpark
- Madeline Manion, PT Physical Therapist · Palo Alto
- Stephanie Seav Pharmacist · San Jose
- Jian Qing Liang Pharmacist · Petaluma
- Scott Montgomery, OTR, L Occupational Therapist · Mission Viejo
- Olivia Bass, OD Optometrist · San Francisco
- Makenna Vierck, DMD Dentist - General Practice · San Francisco
- Analia Nguyen, PharmD Pharmacist · San Diego
- Tiffanie Vo, PharmD Pharmacist · Westminster
- Sarah Kim, PharmD Pharmacist · San Mateo
- George Eskander, RPH Pharmacist · Inglewood
Mailing Address
2880 Hulen Pl
Riverside, CA 925072606