Physician Profile
Unclaimed ProfileAbout RUDDY
John Ruddy, M.D. practices sleep medicine in San Leandro, CA. John is a 1980 graduate of Georgetown University School of Medicine. John is also listed as specializing in pulmonary disease. According to Medicare claims data, John cared for 353 Medicare patients across 469 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (510) 263-3300
- Email not available
Practice Locations
13939 E 14TH ST
San Leandro, CA 94578
Procedures Most Often Billed to Medicare
469 services · 353 patients · 5 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Sleep study in sleep lab (6 years or older) | Treatment | 95810 |
56 |
| Sleep study in sleep lab with continuous airway pressure (6 years or older) | Treatment | 95811 |
46 |
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
201 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
101 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
65 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Other sleep medicines at this location 1
Same specialty, same street address — most likely the same department or group.
Related specialists at this location 1
Clinically related specialties at the same address — the people this provider most likely works alongside.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
More connections — 24 related providers in 3 groups
Trained at Georgetown University School of Medicine 8
Other providers in the same specialty who trained at the same institution.
Class of 1980 at Georgetown University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Also performs Sleep study in sleep lab (6 years or older) 8
Providers in CA who bill this service to Medicare most often.
Common questions
What is Dr. Ruddy's specialty?
Dr. Ruddy is a sleep medicine in San Leandro, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “SLEEP MEDICINE”.
NPI registry
Where can I find Dr. Ruddy?
Dr. Ruddy is listed at 13939 E 14TH ST, San Leandro, CA 94578. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Dr. Ruddy?
The number on file is (510) 263-3300. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Ruddy's NPI number?
Dr. Ruddy's National Provider Identifier is 1902890130. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
What is Dr. Ruddy's medical education?
Dr. Ruddy attended Georgetown University School of Medicine, graduating in 1980. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Ruddy been practicing?
Dr. Ruddy has 46 years experience. Calculated from a graduation year of 1980, reported in the CMS National Downloadable File.
CMS public data
What is Dr. Ruddy known for?
According to Medicare billing data, Dr. Ruddy provides treatments such as sleep study in sleep lab and sleep study in sleep lab with continuous airway pressure, alongside routine visits and testing. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Ruddy confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Ruddy. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.