Monica Lee, M.D.
NPI 1215129309 · Hematology & Oncology Physician · Fullerton, CA
Enrolled with Medicare as Practitioner - Hematology/Oncology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Monica Lee, M.D. is a Hematology & Oncology Physician provider in Fullerton, CA (NPI 1215129309).
Provider details
- NPI number
- 1215129309
- Entity type
- Individual
- Primary specialty
- Hematology & Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A101114 (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
18 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
1,006 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 884 | $138 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 47 | $235 |
| Insertion of Needle Into Vein for Collection of Blood Sample36415 | 30 | $9 |
| Subsequent Hospital Care With Moderate Levelof Medical Decision Making, If Using Time, at Least 50 Minutes99233 | 26 | $122 |
| Initial Hospital Care With Moderate Level of Medical Decision Making, If Using Time, at Least 75 Minutes99223 | 19 | $179 |
Typical Medicare-allowed amounts for these services range $9–$235 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, and not what you would be billed. Medicare Part B covers roughly an eighth of all NPIs (65+ skew); services with fewer than 11 beneficiaries are suppressed by CMS. Source: CMS Medicare Physician & Other Practitioners, by Provider & Service.
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 20 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Anastrozole | 206 | 83 |
| Letrozole | 58 | 23 |
| Exemestane | 52 | 21 |
| Tamoxifen Citrate | 52 | 21 |
| Hydroxyurea | 47 | 12 |
| Lidocaine/Prilocainebrand: Lidocaine-Prilocaine | 24 | 17 |
| Palbociclibbrand: Ibrance | 20 | — |
| Ribociclib Succinatebrand: Kisqali |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$7,770 across 136 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
Registry dates
- Enumerated
- 2007-08-14
- Last updated
- 2022-10-04
- Certified
- 2022-10-04
Frequently asked questions
- What is Monica Lee's NPI number?
- Monica Lee's National Provider Identifier (NPI) is 1215129309, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Monica Lee's specialty?
- Monica Lee is listed in the NPPES registry with a primary specialty of Hematology & Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Monica Lee located?
- Monica Lee's practice location on file with NPPES is 2151 N Harbor Blvd Ste 3200, Fullerton, CA 92835-3826.
- What is Monica Lee's phone number?
- The practice phone number listed in the NPPES registry for Monica Lee is (714) 446-5900.
- Does Monica Lee accept Medicare?
- Monica Lee is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Monica Lee's NPI active?
- Yes — Monica Lee's NPI (1215129309) is active in the NPPES registry as of the last update on 2022-10-04.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.