Daniel Klein , PA-C
Physician Assistant β’ Vacaville, CA
1119 E Monte Vista Ave
Vacaville, CA 956883009
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 May 14, 2021; this date does not establish years in practice.
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Published CMS data list 748 Medicare Part D prescriptions, including refills, in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Published rows only; this is not a quality measure.
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Published Part D records, 2024:
- Atorvastatin Calcium β 124 prescription fills, including refills.
- Metformin Hcl β 74 prescription fills, including refills.
- Lisinopril β 56 prescription fills, including refills.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Drug names come from pharmacy claims. Listing a drug here is not an endorsement or a recommendation.
See all 27 records in the table Β· Guide: How to read Medicare Part D prescriber data
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More Part D prescriptions than 75% of clinicians listed under Physician Assistant in California (2024, 7,516 clinicians with data). Median for this group: 229. Middle half: 72 to 718.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2024. Billing and prescribing volume is not a quality rating.
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Medicare Part D prescriptions went from 17 in 2023 to 748 in 2024.
Source: CMS, Medicare Part D Prescribers β by Provider and Drug, 2023β2024.
Practice Location & Contact Primary Location
1119 E Monte Vista Ave
Vacaville, CA 956883009
Matched by practice address or phone in NPPES. A shared address or phone does not confirm that this clinician works there.
What Public CMS Data Show
Physician Assistant: NPPES taxonomy is a reported classification, not proof of board certification.
30-day fills
1,542 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
$114,027 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 β by Provider and Drug, 2024.
Open Payments general payments, program year 2025
All general payments: $830.78 across 28 records.
By nature of payment
- Food and Beverage: $830.78 across 28 records.
Reporting-company totals (3 largest of 14)
- Novo Nordisk Inc: $400.81 across 9 records.
- ABBVIE INC.: $114.44 across 5 records.
- Intra-Sana Laboratories: $40.11 across 2 records.
A reported payment does not necessarily mean the financial relationship is improper and is not a measure of care quality. Clinicians can review and dispute these records.
Source: Calculated by T-MedInfo from CMS Open Payments general-payment records for program year 2025 (published June 30, 2026).
NPI first issued
2021
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, βDoes your provider accept Medicare as full payment?β
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)
Daniel Klein 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 Daniel Klein 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 Vacaville and California
Billing and prescribing volume is not a quality rating.
Medicare Part D prescriptions
More Part D prescriptions than 75% of clinicians listed under Physician Assistant in California (2024, 7,516 clinicians with data). Median for this group: 229. Middle half: 72 to 718.
Too few clinicians listed under Physician Assistant in Vacaville have Medicare Part D data for 2024 to compare.
Part D drug cost
A higher Part D drug cost than 80% of 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.
Too few clinicians listed under Physician Assistant in Vacaville have Medicare Part D data for 2024 to compare.
16 active clinicians are listed under Physician Assistant with a practice address in Vacaville, CA (14,458 in California).
Addresses are self-reported to NPPES and may be out of date.
Telehealth indicator in Vacaville
18.8% of these 16 clinicians have the CMS telehealth indicator.
50% of these 16 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 D prescriptions
Medicare Part D prescriptions went from 17 in 2023 to 748 in 2024.
- 2023: 17
- 2024: 748
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30-day fills
30-day fills increased 3662% from 41 in 2023 to 1,542 in 2024.
- 2023: 41
- 2024: 1,542
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Part D drug cost
Part D drug cost went from $763 in 2023 to $114,027 in 2024.
- 2023: $763
- 2024: $114,027
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Industry payments (Open Payments)
Industry payments (Open Payments) went from $263.21 in 2023 to $830.78 in 2025.
- 2023: $263.21
- 2024: $505.86
- 2025: $830.78
Sources: CMS Medicare Part D Prescribers (2024), CMS Open Payments (2025), CMS Doctors and Clinicians, CMS NPPES NPI Registry. Specialty names follow the NUCC Health Care Provider Taxonomy.
Text: T-MedInfo Β· 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 2025 (payments made January 1 β December 31, 2025): 28 records totaling $830.78.
| Manufacturer | Payment Nature | Product | Type | Amount ($) |
|---|---|---|---|---|
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Ozempic | General | $124.87 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Wegovy | General | $121.82 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Ozempic | General | $33.98 |
| ViiV Healthcare Company |
Food and Beverage
In-kind items and services
|
APRETUDE | General | $33.02 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
QULIPTA | General | $29.98 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
QULIPTA | General | $29.77 |
| Gilead Sciences, Inc. |
Food and Beverage
In-kind items and services
|
β | General | $28.81 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
β | General | $27.42 |
| Medtronic, Inc. |
Food and Beverage
In-kind items and services
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MINIMED 780G | General | $25.37 |
| Exact Sciences Corporation |
Food and Beverage
In-kind items and services
|
The Cologuard Plus Collection Kit | General | $24.82 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Ozempic | General | $24.81 |
| Dexcom, Inc. |
Food and Beverage
In-kind items and services
|
Dexcom G6 Transmitter | General | $24.12 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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β | General | $23.35 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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MOUNJARO | General | $23.14 |
| ALK-Abello, Inc |
Food and Beverage
In-kind items and services
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Odactra | General | $23.00 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
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QULIPTA | General | $22.81 |
| Sanofi Pasteur Inc. |
Food and Beverage
In-kind items and services
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BEYFORTUS | General | $22.64 |
| Intra-Sana Laboratories |
Food and Beverage
In-kind items and services
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RELTONE 200 MG | General | $21.75 |
| Xeris Pharmaceuticals, Inc. |
Food and Beverage
In-kind items and services
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GVOKE HYPOPEN | General | $20.10 |
| SCILEX PHARMACEUTICALS INC. |
Food and Beverage
In-kind items and services
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ZTLido | General | $19.32 |
| Intra-Sana Laboratories |
Food and Beverage
In-kind items and services
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GLYCATE | General | $18.36 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
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β | General | $17.45 |
| ABBVIE INC. |
Food and Beverage
In-kind items and services
|
MAVYRET | General | $17.38 |
| Eli Lilly and Company |
Food and Beverage
In-kind items and services
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MOUNJARO | General | $16.27 |
| Novo Nordisk Inc |
Food and Beverage
In-kind items and services
|
Ozempic | General | $15.64 |
(top 25 shown)
Source: CMS Open Payments, program year 2025, released June 30, 2026.
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 |
|---|---|---|---|---|---|
| Atorvastatin Calcium | Atorvastatin Calcium | 124 | 9,450 | $710.74 | 45 |
| Metformin Hcl | Metformin Hcl | 74 | 5,250 | $439.43 | 25 |
| Lisinopril | Lisinopril | 56 | 4,080 | $275.67 | 19 |
| Gabapentin | Gabapentin | 56 | 2,780 | $1,693.75 | 16 |
| Amlodipine Besylate | Amlodipine Besylate | 43 | 2,301 | $266.72 | 16 |
| Losartan Potassium | Losartan Potassium | 40 | 3,000 | $224.01 | 16 |
| Jardiance | Empagliflozin | 39 | 2,070 | $36,869.12 | β |
| Pantoprazole Sodium | Pantoprazole Sodium | 24 | 1,121 | $434.79 | β |
| Basaglar Kwikpen U-100 | Insulin Glargine,hum.Rec.Anlog | 23 | 1,209 | $6,229.76 | β |
| Omeprazole | Omeprazole | 21 | 1,740 | $309.38 | β |
| Ozempic | Semaglutide | 20 | 651 | $16,927.80 | β |
| Clotrimazole | Clotrimazole | 18 | 412 | $483.91 | β |
| Levothyroxine Sodium | Levothyroxine Sodium | 18 | 1,560 | $403.62 | β |
| Levetiracetam | Levetiracetam | 17 | 666 | $379.48 | β |
| Rybelsus | Semaglutide | 17 | 570 | $17,382.20 | β |
| Nano 2nd Gen Pen Needle | Pen Needle, Diabetic | 16 | 1,008 | $888.85 | β |
| Alendronate Sodium | Alendronate Sodium | 15 | 1,261 | $62.80 | β |
| Dulera | Mometasone/Formoterol | 15 | 450 | $5,708.43 | β |
| Trulicity | Dulaglutide | 15 | 728 | $22,920.18 | β |
| Fluticasone Propionate | Fluticasone Propionate | 14 | 861 | $212.45 | β |
| Montelukast Sodium | Montelukast Sodium | 13 | 367 | $231.32 | β |
| Metformin Hcl Er | Metformin Hcl | 13 | 990 | $76.48 | β |
| Tamsulosin Hcl | Tamsulosin Hcl | 12 | 540 | $129.42 | β |
| Albuterol Sulfate Hfa | Albuterol Sulfate | 12 | 271 | $489.33 | β |
| Metoprolol Tartrate | Metoprolol Tartrate | 11 | 990 | $89.86 | β |
(top 25 shown)
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: 2024-05-02NUCC 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
I20221006000295
CA
3577949007
Sources: CMS Provider Enrollment and Order and Referring. Medicare enrollment is a billing status, not an accreditation or quality rating.
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
Nurse Practitioner - Family
Master of Science in Nursing, Family Nurse Practitioner (Certified), Registered Nurse
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Family Medicine
Doctor of Osteopathic Medicine (D.O.)
Career & Practice History Timeline
Changes recorded in monthly NPPES data files: addresses, names, credentials, specialties and NPI status
Recorded as DANIEL KLEIN, PA-C
Registered at 1119 E MONTE VISTA AVE, VACAVILLE, CA 956883009 (Tel: 7074694640)
NPI status registered as active in NPPES database
Registered at 1310 CLUB DR, VALLEJO, CA 945921187 (Tel: 7076385809)
Registered at 861 DEER SPRING CIR, CONCORD, CA 945215428 (Tel: 2036056304)
Recorded as DANIEL KLEIN
Physician Assistant
First registered as active Individual Practitioner in NPPES Database.
NPI Administrative Meta
Other Physician Assistants in Vacaville
- Amber Hewitt, PA-C
- Kristy Edelman, PA
- Valerie Roggenbuck, PA
- Julianna Cline, PA
- Emerald Goldsmith, PA
- Lauren Watanabe
More public profiles in California
Directory navigation, in NPI number order.
- William Armstrong, MD Otolaryngology Β· Orange
- Jeffrey Kuo, MD Radiology - Radiation Oncology Β· Orange
- Carlos Meza, MD Internal Medicine - Nephrology Β· Monterey Park
- Sean Skelton, DO Otolaryngology Β· La Mesa
- Rachel Young, MD Family Medicine Β· San Carlos
- Darrell Hansen, MD Family Medicine Β· Modesto
- John Blaney, MD Surgery Β· Templeton
- Fernando Mata, PA-C Physician Assistant Β· Lamont
- Rashad Ansari, MD Internal Medicine - Rheumatology Β· Vista
- Abhijit Shaligram, MD Surgery Β· Los Banos
- Michael Tramell, MD Psychiatry & Neurology - Child & Adolescent Psychiatry Β· Newport Beach
- Robert Buckenberger, DPM Podiatrist Β· Fresno
Mailing Address
861 Deer Spring Cir
Concord, CA 945215428
Phone: 2036056304