Physician Profile
Gretl C. Lam, M.D.
Unclaimed ProfileAbout Dr. Lam
Gretl C. Lam, M.D. practices hospice & palliative medicine in Sunnyvale, CA. Gretl is a 2017 graduate of New York University School of Medicine. Medicare claims data shows Gretl provided 220 services to 84 patients. The services billed most often include prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by t, subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes, and initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes.
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
Specialty
Credentials & Licensing
License numbers are what the provider reported to NPPES when the NPI was issued or updated. NPPES does not verify licensure; confirm current standing with the state licensing board.
Medicare information
Exactly as CMS reports it (National Downloadable File, Opt-Out Affidavits, Order & Referring). Not an insurance directory; confirm coverage with the office.
Contact Information
- (408) 730-2860
- Email not available
Practice Locations
301 OLD SAN FRANCISCO RD
Sunnyvale, CA 94086
Procedures Most Often Billed to Medicare
220 services · 84 patients · 3 distinct codes
| Procedure | Type | Code | Services | Compared with peers |
|---|---|---|---|---|
| Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by t | Billing code | G0316 |
148 | More than most peers in Hospice & Palliative Medicine |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
41 | Less often than most peers in Hospice & Palliative Medicine |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
31 | As often as other peers in Hospice & Palliative Medicine |
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.
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.
Other hospice & palliative medicines in Sunnyvale 2
Same specialty, same city.
Trained at New York University School of Medicine 7
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 2017 at New York University School of Medicine 8
Providers who graduated from the same medical school in the same year.
Common questions
What is Gretl C. Lam's specialty?
Gretl C. Lam is a hospice & palliative medicine in Sunnyvale, CA. That is the designation recorded for this NPI in the federal registry.
NPI registry
Where can I find Gretl C. Lam?
Gretl C. Lam is listed at 301 Old San Francisco Rd, Sunnyvale, CA 94086. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
How do I contact Gretl C. Lam?
The number on file is (408) 730-2860. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is the NPI for Gretl C. Lam?
Gretl C. Lam's National Provider Identifier is 1184159253. 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 Gretl C. Lam's education?
Gretl C. Lam attended New York University School of Medicine, graduating in 2017. This comes from the CMS National Downloadable File.
CMS public data
How much experience does Gretl C. Lam have?
Gretl C. Lam has 9 years experience. Calculated from a graduation year of 2017, reported in the CMS National Downloadable File.
CMS public data
What is Gretl C. Lam known for?
According to Medicare billing data, Gretl C. Lam the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Is Gretl C. Lam's profile verified?
Not yet. This profile is built from public federal data and has not been confirmed by Gretl C. Lam. If this is you, claiming it is free.
Guide.md
Provider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.