Dr. John Ruddy, MD
- Medicare services, 2024
- 469
- Medicare patients, 2024
- 192
- Part D claims, 2024
- 26
- Industry payments
- $149
- Affiliated sites
- 1
- Practice address
- 400 El Cerro Blvd, Danville, CA 94526
- Practice phone
- Call (925) 820-4472
- Professional email
- Get professional email
- Personal email
- Get personal email
- Mobile number
- Get mobile number
Primary practice
Golden Gate Sleep Center
Danville, California
Find Dr. Ruddy'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.
Dr. John Ruddy is a pulmonologist in Danville, California
Dr. Ruddy practices at Golden Gate Sleep Center in Danville, California.
Dr. Ruddy's NPI, 1902890130, was assigned on September 2, 2005. Dr. Ruddy graduated from Georgetown University School Of Medicine in 1980. Dr. Ruddy's California license number on file is G58800.
- NPI
- 1902890130NPI Registry (opens in a new tab)
- Medicare PAC ID
- 6305835232
- NPI enumeration date
- September 2, 2005
- NPI status
- Active
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
- Practice phone
- (925) 820-4472
- Professional email
- Get email
- Personal email
- Get email
- Mobile number
- Get number
- Sex
- Male
- Estimated age
- 72
- Medical school graduation
- 1980
Sources: NPPES NPI Registry (CMS); Dmand AI Professional Profile Data; Dmand AI Practice Data; and Doctors and Clinicians National Downloadable File (CMS)
Dr. John Ruddy practices at Golden Gate Sleep Center in Danville, California
Dr. Ruddy's primary practice is Golden Gate Sleep Center, at 400 El Cerro Blvd, Danville, CA 94526 in Contra Costa County. The practice phone is (925) 820-4472.
- Golden Gate Sleep Center400 El Cerro Blvd, Danville, CA 94526 · Contra Costa CountyPhone(925) 820-4472
Sources: NPPES NPI Registry (CMS); and Dmand AI Practice Data
Dr. John Ruddy is affiliated with 2 sites of care and 1 medical group
Dr. Ruddy's primary practice is Golden Gate Sleep Center in Danville, California. The medical group on file is Golden Gate Sleep Centers. Dmand AI also links Dr. Ruddy to 1 more group practice or clinic, named with a free account.
Sources: NPPES NPI Registry (CMS); Dmand AI Practice Data; and Dmand AI Affiliation Data
Dmand AI tracks the EHR system at Dr. John Ruddy's practice
Dmand AI tracks the electronic health record (EHR) system at each site where Dr. Ruddy practices. Vendor and product names are available with a free account.
| Site | EHR vendor and product |
|---|---|
| Golden Gate Sleep Center | Available with a free account |
| +1 more affiliated site | Available with a free account |
Source: Dmand AI Technology Install Data
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Dr. John Ruddy is one of 1,339 pulmonologists in California
Pulmonary disease is Dr. Ruddy's primary specialty in the NPI Registry, under taxonomy code 207RP1001X. Dr. Ruddy is board certified in internal medicine by the American Board of Internal Medicine. Dmand AI has Dr. Ruddy's licenses on file in 5 states: California, Colorado, Maryland, New York and Washington.
Specialties and state licenses
- Pulmonary disease, CaliforniaPrimary
- Colorado license
- Maryland license
- New York license
- Washington license
Pulmonologists near Dr. Ruddy
Counts of pulmonologists 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. John Ruddy billed Medicare for 469 services in 2024
CMS data shows 469 Medicare services from Dr. Ruddy across 5 procedure codes in 2024, for 192 Medicare patients. Medicare paid $116,902 for them. Every service was in an office.
Dr. Ruddy's Medicare services by type, 2023 to 2024
- 2023
- 2024
- Office and hospital visits
- 2023: 3242024: 36713%
- Tests and treatments
- 2023: 632024: 10262%
Dr. Ruddy compared with the California median for pulmonologists, 2024
- Dr. Ruddy
- California median
- Medicare services
- 469vs 64928% below
- Medicare patients
- 192vs 27229% below
- Part D claims
- 31vs 42193% below
Medians across 1,263 pulmonologists in California with Dmand AI profiles that report each measure.
Dr. Ruddy'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.
Need commercial claims for Dr. Ruddy?
Medicare shows one payer. Book a meeting to get commercial claims data for Dr. Ruddy and other pulmonologists in California.
Sources: Medicare Physician & Other Practitioners - by Provider and Service (CMS), 2024 data; and Dmand AI Peer Benchmarks
Dr. John Ruddy treated 192 Medicare patients in 2024, average age 72
CMS counts 192 Medicare patients who saw Dr. Ruddy in 2024. The largest group is 65 to 74, with 112 patients. 75% of them have high cholesterol, and 73% have high blood pressure. 23% are also on Medicaid. Their average risk score is 1.07, where 1.00 is the Medicare average.
Across all payers, Dmand AI patient panel data puts Dr. Ruddy's median patient age at 53, with 36% women.
Dr. Ruddy's Medicare patients by age, 2024
CMS leaves out age groups with fewer than 11 patients.
Dr. Ruddy's Medicare patients by sex, 2024
- Women9147%
- Men10153%
Chronic conditions among Dr. Ruddy's Medicare patients, 2024
- High cholesterol75%
- High blood pressure73%
- Arthritis42%
- Diabetes31%
- Ischemic heart disease21%
- Mood disorders20%
- Atrial fibrillation19%
- Anxiety18%
Share of Medicare patients with each condition. A patient can have several.
Dr. Ruddy's patients across all payers
Dmand AI patient panel data covers Medicare, Medicaid and commercial patients.
Patient panel by age, all payers
Median age 53
Patient panel by sex, all payers
- Women36%
- Men61%
Sources: Dmand AI Patient Panel Data; and Medicare Physician & Other Practitioners - by Provider (CMS), 2024 data
Dr. John Ruddy wrote 26 Medicare Part D claims in 2024
In 2024, Dr. Ruddy wrote 26 Medicare Part D claims for 11 patients. 85% of them were for generic drugs. They cover 2 drugs, with $260 in total drug cost. In 2019, CMS named 47 claims across 3 drugs.
Dr. Ruddy's Part D claims by kind of drug, 2024
- Generic22 claims85%
- Brand-name and other4 claims15%
Dr. Ruddy's most prescribed drugs by claims, 2020
CMS names a drug when it has 11 or more claims. Share is of the claims for drugs CMS names.
Part D claims for drugs CMS names, 2019 to 2020
- 2019
- 2020
- Claims for drugs CMS names
- 2019: 472020: 3134%
Drugs named by CMS: 2 in 2020, 3 in 2019.
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. John Ruddy offers telehealth to Medicare patients
Dr. Ruddy accepts Medicare assignment, so Medicare's approved amount is taken as full payment. CMS lists Dr. Ruddy as offering telehealth.
- Accepts Medicare assignment
- Yes
- Offers telehealth
- Yes
Source: Doctors and Clinicians National Downloadable File (CMS)
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Dr. John Ruddy received $149 in industry payments from 2016 to 2024
CMS Open Payments shows 4 general payments to Dr. Ruddy from 3 drug and device companies from 2016 to 2024. Food and beverage make up the largest share, 100% of the total. Resmed Corp paid the most, $64.
General payments to Dr. Ruddy by program year, 2016 to 2024
Companies that paid Dr. Ruddy the most, 2016 to 2024
Share is of all general payments to this clinician.
Source: Open Payments (CMS), 2025 data, released July 7, 2026
Dr. John Ruddy graduated from Georgetown University School Of Medicine
Dr. Ruddy graduated from Georgetown University School Of Medicine in 1980.
- Medical school
- Board certified in internal medicine
Source: Dmand AI Professional Profile Data
Dr. John Ruddy accepts plans from 15 insurance carriers
Dr. Ruddy is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
- Aetna
- Blue Cross Blue Shield of Michigan
- United Healthcare
- Elevance
- HCSC
- Blue Cross Blue Shield of Massachusetts
- Regence Health Plans
- Alliant Health Plans
- +7 more carriersWith a free account
Plan types Dr. Ruddy accepts, by number of carriers
- PPO9
- Medicare8
- HMO6
- EPO4
- POS4
Source: Dmand AI Insurance Network Data
Sources for Dr. John Ruddy'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 | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice Data |
| Primary practice, affiliations and health system | NPPES NPI Registry (CMS) (opens in a new tab)Dmand AI Practice DataDmand AI Affiliation 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) |
| 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. John Ruddy
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. John Ruddy's NPI number?
Dr. John Ruddy's NPI number is 1902890130. It was assigned on September 2, 2005, and it is active in the NPI Registry.
What kind of doctor is Dr. John Ruddy?
Dr. John Ruddy is a pulmonologist in Danville, California. The primary specialty in the NPI Registry is Pulmonary Disease Physician (taxonomy code 207RP1001X).
Where does Dr. John Ruddy practice?
Dr. Ruddy practices at 400 El Cerro Blvd, Danville, CA 94526. Dr. Ruddy's primary practice is Golden Gate Sleep Center in Danville, California. Dmand AI also links Dr. Ruddy to 1 group practice or clinic.
What is Dr. John Ruddy's office phone number?
The practice phone on file for Dr. Ruddy is (925) 820-4472.
What is Dr. John Ruddy's medical license number?
Dr. Ruddy's California license number on file is G58800, one of the licenses on file in 5 states.
Which states has Dr. John Ruddy been licensed in?
Dmand AI has state licenses on file for Dr. Ruddy in California (2014 to 2025), Colorado (1984 to 2027), Maryland (2005 to 2017), New York (2002 to 2007) and Washington (1981 to 1983).
What medical group is Dr. John Ruddy part of?
Dr. Ruddy is linked to Golden Gate Sleep Centers.
Does Dr. John Ruddy accept Medicare?
Yes. CMS data shows Dr. Ruddy billed Medicare for 469 services in 2024, and Dr. Ruddy accepts Medicare assignment.
Does Dr. John Ruddy offer telehealth?
Yes. The CMS Doctors and Clinicians file lists Dr. Ruddy as offering telehealth services.
How many Medicare patients does Dr. John Ruddy see?
CMS counts 192 Medicare patients who saw Dr. Ruddy in 2024, with an average age of 72.
Show 7 more questionsShow fewer questions
Is Dr. John Ruddy board certified?
Yes. Dr. Ruddy is board certified in internal medicine by the American Board of Internal Medicine.
What services does Dr. John Ruddy bill to Medicare?
In 2024, Dr. Ruddy's most billed Medicare services were office visit, established patient (99214), office visit, established patient (99215) and office visit, new patient (99205).
Where did Dr. John Ruddy go to medical school?
Dr. Ruddy graduated from Georgetown University School Of Medicine in 1980.
What drugs does Dr. John Ruddy prescribe most?
In 2020 Medicare Part D data, Dr. Ruddy's most prescribed drugs by claims were Gabapentin and Trazodone HCl.
Has Dr. John Ruddy received payments from drug or device companies?
CMS Open Payments shows $149 in general payments to Dr. Ruddy from 3 companies from 2016 to 2024. The largest total came from Resmed Corp.
How long has Dr. John Ruddy been practicing?
Dr. Ruddy graduated from medical school in 1980, 46 years ago.
What insurance does Dr. John Ruddy accept?
Dr. Ruddy is in network with 15 carriers, including Aetna, Blue Cross Blue Shield of Michigan and United Healthcare. PPO plans come from the most carriers, 9. Check the plan with the practice before a visit.
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