Maria Creselda De Leon, MD
NPI 1073773073 · Gynecologic Oncology Physician · Santa Clarita, CA
Enrolled with Medicare as Practitioner - Obstetrics/Gynecology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Maria Creselda De Leon, MD is a Gynecologic Oncology Physician provider in Santa Clarita, CA (NPI 1073773073).
Provider details
- NPI number
- 1073773073
- Entity type
- Individual
- Primary specialty
- Gynecologic Oncology PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- Yes
- License
- 01071053A (IN)
Specialties & taxonomies
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
4 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
668 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 | 197 | $143 |
| Visit Complexity Inherent to Evaluation and Management Associated With Medical Care Services That Serve As the Continuing Focal Point for All Needed Health Care Services And/Or With Medical Care Services That Are Part of Ongoing Care Related to a Patient'SG2211 | 126 | $18 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 120 | $90 |
| New Patient Office Or Other Outpatient Visit With a High Level of Medical Decision Making, If Using Time, 60 Minutes Or More99205 | 82 | $240 |
| Telephone Medical Discussion With Physician, 21-30 Minutes99443 | 66 | $128 |
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 5 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 58 | 55 |
| Ondansetronbrand: Ondansetron Odt | 45 | 44 |
| Estradiol | 24 | — |
| Paroxetine Hcl | 17 | — |
| Clotrimazole/Betamethasone Dipbrand: Clotrimazole-Betamethasone | 14 | — |
Medicare Part D only. These counts cover prescriptions paid through Medicare Part D in 2024 — they do notinclude cash-pay, commercial-insurance, Medicaid, or Part B–administered drugs, and badly undercount high cash-pay categories (e.g. GLP-1 weight-loss, testosterone, and ED medications). Any drug with 10 or fewer claims is omitted by CMS, and beneficiary counts under 11 are suppressed — so a missing drug means , never zero. This is a factual claims summary, not an endorsement, not medical advice, and not a consumer report. Source: CMS Medicare Part D Prescribers — by Provider and Drug.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$35 across 2 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 (3)
- 44151 15th St W Ste 101Lancaster, CA 93534-4079Phone: (661) 902-5600Fax: (661) 951-0686
- 15031 Rinaldi St Ste 150Mission Hills, CA 91345-1207Phone: (818) 660-4700Fax: (818) 837-1987
- 20 York St # T-209New Haven, CT 06510-3220Phone: (203) 688-2259
Registry dates
- Enumerated
- 2008-06-12
- Last updated
- 2020-12-07
- Certified
- 2020-12-07
Frequently asked questions
- What is Maria Creselda De Leon's NPI number?
- Maria Creselda De Leon's National Provider Identifier (NPI) is 1073773073, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Maria Creselda De Leon's specialty?
- Maria Creselda De Leon is listed in the NPPES registry with a primary specialty of Gynecologic Oncology Physician (Allopathic & Osteopathic Physicians).
- Where is Maria Creselda De Leon located?
- Maria Creselda De Leon's practice location on file with NPPES is 23823 Valencia Blvd Ste 250, Santa Clarita, CA 91355-9512.
- What is Maria Creselda De Leon's phone number?
- The practice phone number listed in the NPPES registry for Maria Creselda De Leon is (661) 799-1999.
- Does Maria Creselda De Leon accept Medicare?
- Maria Creselda De Leon is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Maria Creselda De Leon's NPI active?
- Yes — Maria Creselda De Leon's NPI (1073773073) is active in the NPPES registry as of the last update on 2020-12-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.