Diana Petros, FNP-C

  • Grass Valley, CA
  • Family nurse practitioner
NPI1831703552PAC ID6507271939
Medicare services, 2024
37
Medicare patients, 2024
52
Part D claims, 2024
572
Hospital affiliations
1
Industry payments
$25
Practice address
844 Old Tunnel Road, Grass Valley, CA 95945
Practice phone
Call (530) 273-4984
Professional email
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Personal email
Get personal email
Mobile number
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Social profiles

Primary practice

Western Sierra Medical Clinic - Grass Valley (Old Tunnel Rd)

FQHC - Main Site · Grass Valley, California

See all 7 affiliations

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Diana Petros is a family nurse practitioner in Grass Valley, California

Diana Petros practices at Western Sierra Medical Clinic - Grass Valley (Old Tunnel Rd) in Grass Valley, California.

Diana Petros' NPI, 1831703552, was assigned on August 31, 2020. Diana Petros holds California license F08200578.

NPI and contact details
Medicare PAC ID
6507271939
NPI enumeration date
August 31, 2020
NPI status
Active
Accepts Medicare assignment
Yes
Practice phone
(530) 273-4984
Professional email
Get email
Personal email
Get email
Mobile number
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Sex
Female
Estimated age
32
Medical school graduation
2020

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)

Diana Petros practices at Western Sierra Medical Clinic - Grass Valley (Old Tunnel Rd) in Grass Valley, California

Diana Petros' primary practice is Western Sierra Medical Clinic - Grass Valley (Old Tunnel Rd), at 844 Old Tunnel Road, Grass Valley, CA 95945 in Nevada County. The practice phone is (530) 273-4984.

  • Western Sierra Medical Clinic - Grass Valley (Old Tunnel Rd)
    844 Old Tunnel Road, Grass Valley, CA 95945 · Nevada CountyPhone(530) 273-4984

Source: Dmand AI Affiliation Data

Diana Petros is affiliated with 5 sites of care and 2 medical groups

Diana Petros' primary practice is Western Sierra Medical Clinic - Grass Valley (Old Tunnel Rd) in Grass Valley, California. Diana Petros is also affiliated with Dignity Health - Sierra Nevada Memorial Hospital. The medical group on file is Western Sierra Medical Clinic. Dmand AI also links Diana Petros to 2 more home health agencies, 1 urgent care center and 1 medical group, each named with a free account.

See all 7 affiliations for Diana Petros

Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data

Dmand AI tracks the EHR system at Diana Petros' practice

Dmand AI tracks the electronic health record (EHR) system at each site where Diana Petros practices, 5 sites in all. Vendor and product names are available with a free account.

EHR by site
SiteEHR vendor and product
Western Sierra Medical Clinic - Grass Valley (Old Tunnel Rd)Available with a free account
+4 more sites and 1 medical groupAvailable with a free account

Source: Dmand AI Technology Install Data

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Diana Petros is one of 13,532 family nurse practitioners in California

Family is Diana Petros' primary specialty in the NPI Registry, under taxonomy code 363LF0000X. Diana Petros is licensed in California.

Specialties and state licenses

  • Family nurse practitioner, CaliforniaPrimaryLicense F08200578 · taxonomy 363LF0000X

Clinical focus

Dmand AI lists eyelid inflammation and upper respiratory infection (URI) among the conditions Diana Petros treats.

Family nurse practitioners near Diana Petros

Counts of family nurse practitioners with a Dmand AI profile, by place and practice. Each opens the list.

Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; and Dmand AI Peer Benchmarks

Diana Petros billed Medicare for 37 services in 2024

CMS data shows 37 Medicare services from Diana Petros across 1 procedure code in 2024, for 52 Medicare patients. Medicare paid $126 for them. Every service was in an office.

Medicare services, 202437
Medicare patients52
Paid by Medicare$126
Procedure codes1

Diana Petros compared with the California median for family nurse practitioners, 2024

  • Diana Petros
  • California median
Medicare services
37vs 23484% below
Medicare patients
52vs 9042% below
Part D claims
252vs 36030% below

Medians across 6,382 family nurse practitioners in California with Dmand AI profiles that report each measure.

Diana Petros' most billed Medicare procedure codes, 2024

CMS publishes codes billed for 11 or more Medicare patients. Each label is the code family; CPT descriptions are licensed by the AMA.

See all procedures by Diana Petros

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Medicare shows one payer. Book a meeting to get commercial claims data for Diana Petros and other family nurse practitioners in California.

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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks

Diana Petros treated 52 Medicare patients in 2024, average age 70

CMS counts 52 Medicare patients who saw Diana Petros in 2024. The largest group is 65 to 74, with 28 patients. 65% of them have high cholesterol, and 48% have arthritis. 52% are also on Medicaid. Their average risk score is 0.94, where 1.00 is the Medicare average.

Across all payers, Dmand AI patient panel data puts Diana Petros' median patient age at 64, with 64% women.

Medicare patients, 202452
Average age70
Average risk score0.94
Also on Medicaid52%

Diana Petros' Medicare patients by age, 2024

CMS leaves out age groups with fewer than 11 patients.

Diana Petros' Medicare patients by sex, 2024

  • Women3363%
  • Men1937%

Chronic conditions among Diana Petros' Medicare patients, 2024

  1. High cholesterol65%
  2. Arthritis48%
  3. High blood pressure48%
  4. Anxiety29%
  5. Mood disorders29%
  6. COPD25%
  7. Depression25%
  8. Diabetes25%

Share of Medicare patients with each condition. A patient can have several.

Diana Petros' patients across all payers

Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.

Patient panel by age, all payers

Median age 64

Patient panel by sex, all payers

  • Women64%
  • Men36%

Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data

Diana Petros wrote 572 Medicare Part D claims in 2024

In 2024, Diana Petros wrote 572 Medicare Part D claims for 221 patients. 87% of them were for generic drugs. CMS names the drug for 252 of them, across 13 drugs with 11 or more claims each, at $3,276 in total drug cost.

Part D claims, 2024572
Drugs named by CMS13
Total drug cost$3,276
Part D patients221

Diana Petros' Part D claims by kind of drug, 2024

  • Generic495 claims87%
  • Brand-name and other77 claims13%

Diana Petros' most prescribed drugs by claims, 2024

CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.

Drug classes CMS tracks in Diana Petros' Part D claims, 2024

  • Opioids5%27 of 572 claims
  • Antibiotics15%85 of 572 claims

Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.

See all prescribing by Diana Petros

Sources: Medicare Part D Prescribers - by Provider and Drug (CMS), 2024 data, released May 6, 2026; and Medicare Part D Prescribers - by Provider (CMS), 2024 data

How Diana Petros takes part in Medicare

Diana Petros accepts Medicare assignment, so Medicare's approved amount is taken as full payment.

Accepts Medicare assignment
Yes

Source: Doctors and Clinicians National Downloadable File (CMS)

For MedTech and pharma teams

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Diana Petros received $25 in industry payments in 2025

CMS Open Payments shows 1 general payment to Diana Petros from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Takeda Pharmaceuticals U.S.A., Inc. paid the most, $25.

Companies that paid Diana Petros the most, 2025 to 2025

Share is of all general payments to this clinician.

See all payments to Diana Petros

Source: Open Payments (CMS), 2025 data, released July 7, 2026

Sources for Diana Petros's profile data

Sources for the data on this page
Data on this pageSource
NPI, name, sex, specialty and licensesNPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data
Practice locations and phoneDmand AI Affiliation Data
Primary practice, affiliations and health systemDmand AI Affiliation DataDmand AI Org Hierarchy Data
Medicare services and procedure codesMedicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab)
State medians for the same specialtyDmand AI Peer Benchmarks
Medicare patients and the all-payer patient panelDmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab)
Part D prescribingMedicare Part D Prescribers - by Provider and Drug (CMS) (opens in a new tab)Medicare Part D Prescribers - by Provider (CMS) (opens in a new tab)
MIPS scores, telehealth, assignment and procedure percentilesDoctors and Clinicians National Downloadable File (CMS) (opens in a new tab)
Industry paymentsOpen Payments (CMS) (opens in a new tab)
EHR at each practice siteDmand AI Technology Install Data
Similar physiciansDmand AI Affiliation Data

Data last refreshed October 2026Report an inaccuracyRemove my information

FAQ

Frequently asked questions about Diana Petros

Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.

What is Diana Petros' NPI number?

Diana Petros' NPI number is 1831703552. It was assigned on August 31, 2020, and it is active in the NPI Registry.

What does Diana Petros specialize in?

Diana Petros is a family nurse practitioner in Grass Valley, California. The primary specialty in the NPI Registry is Family Nurse Practitioner (taxonomy code 363LF0000X).

Where does Diana Petros practice?

Diana Petros practices at 844 Old Tunnel Road, Grass Valley, CA 95945. Diana Petros' primary practice is Western Sierra Medical Clinic - Grass Valley (Old Tunnel Rd) in Grass Valley, California. Dmand AI also links Diana Petros to 2 home health agencies, 1 urgent care center and 1 medical group.

What is Diana Petros' office phone number?

The practice phone on file for Diana Petros is (530) 273-4984.

What is Diana Petros' medical license number?

Diana Petros holds California license F08200578.

Which hospitals is Diana Petros affiliated with?

Diana Petros is affiliated with Dignity Health - Sierra Nevada Memorial Hospital.

What medical group is Diana Petros part of?

Diana Petros is linked to Western Sierra Medical Clinic. Dmand AI links Diana Petros to 1 more medical group.

Does Diana Petros accept Medicare?

Yes. CMS data shows Diana Petros billed Medicare for 37 services in 2024, and Diana Petros accepts Medicare assignment.

How many Medicare patients does Diana Petros see?

CMS counts 52 Medicare patients who saw Diana Petros in 2024, with an average age of 70.

What services does Diana Petros bill to Medicare?

In 2024, Diana Petros' most billed Medicare services were lab and pathology test (81002).

Show 3 more questionsShow fewer questions

What drugs does Diana Petros prescribe most?

In 2024 Medicare Part D data, Diana Petros' most prescribed drugs by claims were Albuterol Sulfate Hfa, Fluticasone Propionate and Cephalexin.

Has Diana Petros received payments from drug or device companies?

CMS Open Payments shows $25 in general payments to Diana Petros from 1 company from 2025 to 2025. The largest total came from Takeda Pharmaceuticals U.S.A., Inc.

How long has Diana Petros been practicing?

Diana Petros graduated from medical school in 2020, 6 years ago.

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