Dr. Nelson R. Maldonado, MD
- Medicare services, 2024
- 370
- Medicare patients, 2024
- 104
- Part D claims, 2024
- 108
- Industry payments
- $1,922
- Affiliated sites
- 3
- Practice address
- 935 Trancas Street, Suite 3a, Napa, CA 94558
- Practice phone
- Call (707) 681-7777
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Napa Ambulatory Surgery Center
Surgery Center - Medicare-Certified · Napa, California
Find Dr. Maldonado's professional email, personal email and mobile number
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Dr. Nelson R. Maldonado is a general surgeon in Napa, California
Dr. Maldonado practices at Napa Ambulatory Surgery Center in Napa, California.
Dr. Maldonado's NPI, 1508921305, was assigned on December 22, 2006. Dr. Maldonado graduated from UC Irvine School of Medicine in 1983. Dr. Maldonado holds California license G53915.
- NPI
- 1508921305NPI Registry (opens in a new tab)
- Medicare PAC ID
- 2466403555
- NPI enumeration date
- December 22, 2006
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Practice phone
- (707) 681-7777
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 69
- Medical school graduation
- 1983
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Affiliation Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. Nelson R. Maldonado practices at Napa Ambulatory Surgery Center in Napa, California
Dr. Maldonado's primary practice is Napa Ambulatory Surgery Center, at 935 Trancas Street, Suite 3a, Napa, CA 94558. The practice phone is (707) 681-7777.
- Napa Ambulatory Surgery Center935 Trancas Street, Suite 3a, Napa, CA 94558Phone(707) 681-7777
Source: Dmand AI Affiliation Data
Dr. Nelson R. Maldonado is affiliated with 3 sites of care and 1 medical group
Dr. Maldonado's primary practice is Napa Ambulatory Surgery Center in Napa, California. The medical group on file is California Vein & Wound Center. Dmand AI also links Dr. Maldonado to 1 more physician office and 1 group practice or clinic, each named with a free account.
Sources: Dmand AI Affiliation Data; and Dmand AI Org Hierarchy Data
Dmand AI tracks the EHR system at Dr. Nelson R. Maldonado's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Maldonado practices, 3 sites in all. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Napa Ambulatory Surgery Center | Available with a free account |
| +2 more affiliated sites | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. Nelson R. Maldonado is one of 2,926 general surgeons in California
Surgery is Dr. Maldonado's primary specialty in the NPI Registry, under taxonomy code 208600000X. Dr. Maldonado is board certified in surgery by the American Board of Surgery. Dmand AI has Dr. Maldonado's licenses on file in 2 states: California and Oklahoma.
Specialties and state licenses
- Surgery, CaliforniaPrimary
- Oklahoma license
Clinical focus
Dmand AI lists varicose vein treatment among the conditions Dr. Maldonado treats.
General surgeons near Dr. Maldonado
Counts of general surgeons 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
Dr. Nelson R. Maldonado billed Medicare for 370 services in 2024
CMS data shows 370 Medicare services from Dr. Maldonado across 10 procedure codes in 2024, for 104 Medicare patients. Medicare paid $147,091 for them. Every service was in an office.
Dr. Maldonado's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 2162024: 17220%
- Surgery
- 2023: 1152024: 10211%
- Tests and treatments
- 2023: 1322024: 9627%
Dr. Maldonado compared with the California median for general surgeons, 2024
- Dr. Maldonado
- California median
- Medicare services
- 370vs 1662.2 times
- Medicare patients
- 104vs 12114% below
- Part D claims
- 89vs 342.6 times
Medians across 2,606 general surgeons in California with Dmand AI profiles that report each measure.
Dr. Maldonado's 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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Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. Nelson R. Maldonado treated 104 Medicare patients in 2024, average age 74
CMS counts 104 Medicare patients who saw Dr. Maldonado in 2024. The largest group is 65 to 74, with 48 patients. 75% of them have high blood pressure, and 63% have high cholesterol. 50% are also on Medicaid. Their average risk score is 1.31, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Maldonado's median patient age at 58, with 69% women.
Dr. Maldonado's Medicare patients by age, 2024
Dr. Maldonado's Medicare patients by sex, 2024
- Women6865%
- Men3635%
Chronic conditions among Dr. Maldonado's Medicare patients, 2024
- High blood pressure75%
- High cholesterol63%
- Arthritis57%
- Diabetes36%
- Heart failure24%
- Atrial fibrillation21%
- Chronic kidney disease21%
- Osteoporosis21%
Share of Medicare patients with each condition. A patient can have several.
Dr. Maldonado's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 58
Patient panel by sex, all payers
- Women69%
- Men31%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. Nelson R. Maldonado wrote 108 Medicare Part D claims in 2024
In 2024, Dr. Maldonado wrote 108 Medicare Part D claims for 49 patients. 94% of them were for generic drugs. CMS names the drug for 89 of them, across 2 drugs with 11 or more claims each, at $122 in total drug cost. In 2023, CMS named 68 claims across 3 drugs.
Dr. Maldonado's Part D claims by kind of drug, 2024
- Generic102 claims94%
- Brand-name and other6 claims6%
Dr. Maldonado'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 Dr. Maldonado's Part D claims, 2024
- Opioids39%42 of 108 claims
Share of all Part D claims for each drug class CMS reports on. Classes with no claims are left out.
Part D claims for drugs CMS names, 2023 to 2024
- 2023
- 2024
- Claims for drugs CMS names
- 2023: 682024: 8931%
Drugs named by CMS: 2 in 2024, 3 in 2023.
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
Dr. Nelson R. Maldonado ranks in the 70th percentile for varicose vein removal in Medicare
Dr. Maldonado accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS counts 40 procedures of varicose vein removal by Dr. Maldonado, more than 70% of the clinicians it reports for that procedure.
- Accepts Medicare assignment
- Yes
Where Dr. Maldonado ranks in Medicare procedure volume
- Varicose vein removal
- 70th percentile40 procedures
CMS ranks each clinician against every clinician it reports for the same procedure category.
Sources: Doctors and Clinicians National Downloadable File (CMS); and Doctors and Clinicians Utilization Data (CMS)
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Dr. Nelson R. Maldonado received $1,922 in industry payments from 2016 to 2025
CMS Open Payments shows 40 general payments to Dr. Maldonado from 12 drug and device companies from 2016 to 2025. Food and beverage make up the largest share, 62% of the total. Ethicon Inc. paid the most, $854.
General payments to Dr. Maldonado by program year, 2016 to 2025
General payments to Dr. Maldonado by kind, 2016 to 2025
- Food and beverage$1,19062%
- Travel and lodging$73238%
Companies that paid Dr. Maldonado the most, 2016 to 2025
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. Nelson R. Maldonado graduated from UC Irvine School of Medicine
Dr. Maldonado graduated from UC Irvine School of Medicine in 1983.
- Medical school
- Board certified in surgery
Source: Dmand AI Professional Profile Data
Dr. Nelson R. Maldonado accepts plans from 16 insurance carriers
Dr. Maldonado is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Humana
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- +8 more carriersWith a free account
Plan types Dr. Maldonado accepts, by number of carriers
- PPO10
- Medicare9
- HMO7
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. Nelson R. Maldonado'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)Doctors and Clinicians Utilization Data (CMS) (opens in a new tab) |
| Industry payments | Open Payments (CMS) (opens in a new tab) |
| Training, board certification and memberships | Dmand AI Professional Profile Data |
| Insurance carriers and plan types | Dmand AI Insurance Network Data |
| 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 Dr. Nelson R. Maldonado
Spotted something out of date? Email hello@dmand.ai and we will check the record. Contact details live in the free trial.
What is Dr. Nelson R. Maldonado's NPI number?
Dr. Nelson R. Maldonado's NPI number is 1508921305. It was assigned on December 22, 2006, and it is active in the NPI Registry.
What kind of doctor is Dr. Nelson R. Maldonado?
Dr. Nelson R. Maldonado is a general surgeon in Napa, California. The primary specialty in the NPI Registry is Surgery Physician (taxonomy code 208600000X).
Where does Dr. Nelson R. Maldonado practice?
Dr. Maldonado practices at 935 Trancas Street, Suite 3a, Napa, CA 94558. Dr. Maldonado's primary practice is Napa Ambulatory Surgery Center in Napa, California. Dmand AI also links Dr. Maldonado to 1 physician office and 1 group practice or clinic.
What is Dr. Nelson R. Maldonado's office phone number?
The practice phone on file for Dr. Maldonado is (707) 681-7777.
What is Dr. Nelson R. Maldonado's medical license number?
Dr. Maldonado holds California license G53915, one of the licenses on file in 2 states.
Which states has Dr. Nelson R. Maldonado been licensed in?
Dmand AI has state licenses on file for Dr. Maldonado in California (1984 to 2026) and Oklahoma (2001 to 2010).
What medical group is Dr. Nelson R. Maldonado part of?
Dr. Maldonado is linked to California Vein & Wound Center.
Does Dr. Nelson R. Maldonado accept Medicare?
Yes. CMS data shows Dr. Maldonado billed Medicare for 370 services in 2024, and Dr. Maldonado accepts Medicare assignment.
How many Medicare patients does Dr. Nelson R. Maldonado see?
CMS counts 104 Medicare patients who saw Dr. Maldonado in 2024, with an average age of 74.
Is Dr. Nelson R. Maldonado board certified?
Yes. Dr. Maldonado is board certified in surgery by the American Board of Surgery.
Show 6 more questionsShow fewer questions
What services does Dr. Nelson R. Maldonado bill to Medicare?
In 2024, Dr. Maldonado's most billed Medicare services were blood vessel study (93970), office visit, established patient (99213) and surgery: heart and blood vessels (36465).
Where did Dr. Nelson R. Maldonado go to medical school?
Dr. Maldonado graduated from UC Irvine School of Medicine in 1983.
What drugs does Dr. Nelson R. Maldonado prescribe most?
In 2024 Medicare Part D data, Dr. Maldonado's most prescribed drugs by claims were Lorazepam and Hydrocodone-Acetaminophen.
Has Dr. Nelson R. Maldonado received payments from drug or device companies?
CMS Open Payments shows $1,922 in general payments to Dr. Maldonado from 12 companies from 2016 to 2025. The largest total came from Ethicon Inc.
How long has Dr. Nelson R. Maldonado been practicing?
Dr. Maldonado graduated from medical school in 1983, 43 years ago.
What insurance does Dr. Nelson R. Maldonado accept?
Dr. Maldonado is in network with 16 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 10. Check the plan with the practice before a visit.
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