Diana Petros, FNP-C
- 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
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Western Sierra Medical Clinic - Grass Valley (Old Tunnel Rd)
FQHC - Main Site · Grass Valley, California
Find Diana Petros' professional email, personal email and mobile number
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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
- 1831703552NPI Registry (opens in a new tab)
- 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
- Get number
- 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.
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.
| Site | EHR vendor and product |
|---|---|
| Western Sierra Medical Clinic - Grass Valley (Old Tunnel Rd) | Available with a free account |
| +4 more sites and 1 medical group | Available 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, CaliforniaPrimary
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.
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.
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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.
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.
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
- High cholesterol65%
- Arthritis48%
- High blood pressure48%
- Anxiety29%
- Mood disorders29%
- COPD25%
- Depression25%
- 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.
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.
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)
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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.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Sources for Diana Petros's profile data
| Data on this page | Source |
|---|---|
| NPI, name, sex, specialty and licenses | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Professional Profile Data |
| Practice locations and phone | Dmand AI Affiliation Data |
| Primary practice, affiliations and health system | Dmand AI Affiliation DataDmand AI Org Hierarchy Data |
| Medicare services and procedure codes | Medicare Physician & Other Practitioners - by Provider and Service (CMS) (opens in a new tab) |
| State medians for the same specialty | Dmand AI Peer Benchmarks |
| Medicare patients and the all-payer patient panel | Dmand AI Patient Panel DataMedicare Physician & Other Practitioners - by Provider (CMS) (opens in a new tab) |
| Part D prescribing | Medicare 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 percentiles | Doctors and Clinicians National Downloadable File (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| EHR at each practice site | Dmand AI Technology Install Data |
| Similar physicians | Dmand 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).
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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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