Joanna Diel-Martin, NP
- Part D claims, 2024
- 886
- Hospital affiliations
- 2
- Industry payments
- $17
- Medical groups
- 3
- State license
- 1
- Practice address
- 1179 North Mcdowell Blvd, Petaluma, CA 94954
- Practice phone
- Call (707) 559-7500
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Petaluma Health Center
FQHC - Main Site · Petaluma, California
Find Joanna Diel-Martin's professional email, personal email and mobile number
Dmand AI checks each channel through healthcare-specific waterfall enrichment. See what is on file with a free account, with practice phones, licenses and affiliations.
Joanna Diel-Martin is a nurse practitioner in Petaluma, California
Joanna Diel-Martin practices at Petaluma Health Center in Petaluma, California.
Joanna Diel-Martin's NPI, 1932759461, was assigned on September 17, 2019. Joanna Diel-Martin holds California license 95012708.
- NPI
- 1932759461NPI Registry (opens in a new tab)
- Medicare PAC ID
- 7012342926
- NPI enumeration date
- September 17, 2019
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (707) 559-7500
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Female
- Estimated age
- 33
- Medical school graduation
- 2019
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Joanna Diel-Martin practices at Petaluma Health Center in Petaluma, California
Joanna Diel-Martin's primary practice is Petaluma Health Center, at 1179 North Mcdowell Blvd, Petaluma, CA 94954. The practice phone is (707) 559-7500.
- Petaluma Health Center1179 North Mcdowell Blvd, Petaluma, CA 94954Phone(707) 559-7500
Source: Dmand AI Affiliation Data
Joanna Diel-Martin is affiliated with 4 sites of care and 3 medical groups
Joanna Diel-Martin's primary practice is Petaluma Health Center in Petaluma, California. Joanna Diel-Martin is also affiliated with Petaluma Valley Hospital. The medical group on file is Petaluma Health Center. Dmand AI also links Joanna Diel-Martin to 1 more hospital, 2 medical groups and 1 community health center, each named with a free account. Joanna Diel-Martin's employer is on file too: a community health center (fqhc).
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Joanna Diel-Martin's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Joanna Diel-Martin practices, 4 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Petaluma Health Center | Available with a free account |
| +3 more sites and 2 medical groups | Available with a free account |
Source: Dmand AI Technology Install Data
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Joanna Diel-Martin is one of 5,983 nurse practitioners in California
Nurse practitioner is Joanna Diel-Martin's primary specialty in the NPI Registry, under taxonomy code 363L00000X. Joanna Diel-Martin is licensed in California.
Specialties and state licenses
- Nurse practitioner, CaliforniaPrimary
Nurse practitioners near Joanna Diel-Martin
Counts of 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
Joanna Diel-Martin's patients have a median age of 55
Across all payers, Dmand AI patient panel data puts Joanna Diel-Martin's median patient age at 55, with 70% women.
Joanna Diel-Martin's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 55
Patient panel by sex, all payers
- Women70%
- Men29%
Source: Dmand AI Patient Panel Data
Joanna Diel-Martin wrote 886 Medicare Part D claims in 2024
In 2024, Joanna Diel-Martin wrote 886 Medicare Part D claims for 173 patients. 83% of them were for generic drugs. CMS names the drug for 491 of them, across 22 drugs with 11 or more claims each, at $54,645 in total drug cost.
Joanna Diel-Martin's Part D claims by kind of drug, 2024
- Generic736 claims83%
- Brand-name137 claims15%
- Other13 claims1%
Joanna Diel-Martin's 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 Joanna Diel-Martin's Part D claims, 2024
- Opioids2%17 of 886 claims
- Antibiotics2%18 of 886 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 Joanna Diel-Martin takes part in Medicare
Joanna Diel-Martin 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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Joanna Diel-Martin received $17 in industry payments in 2025
CMS Open Payments shows 1 general payment to Joanna Diel-Martin from 1 drug or device company in 2025. Food and beverage make up the largest share, 100% of the total. Abbvie Inc. paid the most, $17.
Companies that paid Joanna Diel-Martin 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 Joanna Diel-Martin'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 patients and the all-payer patient panel | Dmand AI Patient Panel Data |
| 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 Joanna Diel-Martin
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Joanna Diel-Martin's NPI number?
Joanna Diel-Martin's NPI number is 1932759461. It was assigned on September 17, 2019, and it is active in the NPI Registry.
What does Joanna Diel-Martin specialize in?
Joanna Diel-Martin is a nurse practitioner in Petaluma, California. The primary specialty in the NPI Registry is Nurse Practitioner (taxonomy code 363L00000X).
Where does Joanna Diel-Martin practice?
Joanna Diel-Martin practices at 1179 North Mcdowell Blvd, Petaluma, CA 94954. Joanna Diel-Martin's primary practice is Petaluma Health Center in Petaluma, California. Dmand AI also links Joanna Diel-Martin to 1 hospital, 2 medical groups and 1 community health center.
What is Joanna Diel-Martin's office phone number?
The practice phone on file for Joanna Diel-Martin is (707) 559-7500.
What is Joanna Diel-Martin's medical license number?
Joanna Diel-Martin holds California license 95012708.
Which hospitals is Joanna Diel-Martin affiliated with?
Joanna Diel-Martin is affiliated with Petaluma Valley Hospital. Dmand AI links Joanna Diel-Martin to 1 more hospital.
What medical group is Joanna Diel-Martin part of?
Joanna Diel-Martin is linked to Petaluma Health Center. Dmand AI links Joanna Diel-Martin to 2 more medical groups.
Does Joanna Diel-Martin accept Medicare?
Yes. CMS lists Joanna Diel-Martin as accepting Medicare assignment.
What drugs does Joanna Diel-Martin prescribe most?
In 2024 Medicare Part D data, Joanna Diel-Martin's most prescribed drugs by claims were Atorvastatin Calcium, Metformin HCl and Levothyroxine Sodium.
Has Joanna Diel-Martin received payments from drug or device companies?
CMS Open Payments shows $17 in general payments to Joanna Diel-Martin from 1 company from 2025 to 2025. The largest total came from Abbvie Inc.
How long has Joanna Diel-Martin been practicing?
Joanna Diel-Martin graduated from medical school in 2019, 7 years ago.
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