Lisa Knowlton, MD, MPH
NPI 1255861787 · Surgery Physician · Palo Alto, CA
Enrolled with Medicare as Practitioner - General Surgery · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Lisa Knowlton, MD, MPH is a Surgery Physician provider in Palo Alto, CA (NPI 1255861787).
Provider details
- NPI number
- 1255861787
- Entity type
- Individual
- Primary specialty
- Surgery PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD, MPH
- Sex
- Female
- Sole proprietor
- No
- License
- A131627 (CA)
Specialties & taxonomies
Allopathic & Osteopathic Physicians
Allopathic & Osteopathic Physicians
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
9 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
565 Medicare services, 2024 (ranked within specialty)
- Open Payments transparency10% of score
Has Open Payments disclosures (2024)
Medicare volume is ranked against active providers in the same specialty. Signals a provider has no public data for (e.g. Medicare claims) are left out of the score entirely — never counted as zero — so providers without that data are not penalized. See the full formula and weights in our .
What this provider does (Medicare)
Based on Medicare fee-for-service claims, 2024; not all care is captured.
| Service (HCPCS) | Medicare services | Typical Medicare-allowed (2024) |
|---|---|---|
| Critical Care, First 30-74 Minutes99291 | 215 | $233 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 35 Minutes99232 | 198 | $89 |
| Initial Hospital Care With Straightforward Or Low-Level Medical Decision Making, If Using Time, at Least 55 Minutes99222 | 48 | $146 |
| Initial Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 40 Minutes99221 | 41 | $92 |
| Hospital Discharge Day Management, 30 Minutes Or Less99238 | 27 | $93 |
| Subsequent Hospital Care With Straightforward Or Low Level of Medical Decision Making, Per Day, If Using Time, at Least 25 Minutes99231 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$279 across 5 records (Open Payments 2024)
Open Payments discloses payments and transfers of value (meals, travel, consulting, research, royalties) from drug and device makers to providers. This is a transparency signal, not a verdict — such payments are legal and common, and their presence is neither an endorsement nor a criticism. Source: CMS Open Payments, program year 2024.
Practice location
Mailing address
Additional practice locations (1)
- Stanford University Medical Center00 Pasteur Drive, Grant Building, S-067Stanford, CA 94305Phone: (650) 723-0173
Registry dates
- Enumerated
- 2017-06-18
- Last updated
- 2024-04-27
- Certified
- 2024-04-27
Frequently asked questions
- What is Lisa Knowlton's NPI number?
- Lisa Knowlton's National Provider Identifier (NPI) is 1255861787, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Lisa Knowlton's specialty?
- Lisa Knowlton is listed in the NPPES registry with a primary specialty of Surgery Physician (Allopathic & Osteopathic Physicians).
- Where is Lisa Knowlton located?
- Lisa Knowlton's practice location on file with NPPES is 300 Pasteur Dr, Palo Alto, CA 94305-2200.
- What is Lisa Knowlton's phone number?
- The practice phone number listed in the NPPES registry for Lisa Knowlton is (650) 723-4000.
- Does Lisa Knowlton accept Medicare?
- Lisa Knowlton is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Lisa Knowlton's NPI active?
- Yes — Lisa Knowlton's NPI (1255861787) is active in the NPPES registry as of the last update on 2024-04-27.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.