Melissa Frederick, M.D.
NPI 1033238076 · Internal Medicine Physician · Millbrae, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Melissa Frederick, M.D. is a Internal Medicine Physician provider in Millbrae, CA (NPI 1033238076).
Provider details
- NPI number
- 1033238076
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 4301084237 (MI)
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 tenure28% of score
19 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)28% of score
2,513 Medicare services, 2024 (ranked within specialty)
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 methodology.
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) |
|---|---|---|
| Subsequent Nursing Facility Care With Straightforward Level of Medical Decision Making, Per Day, If Using Time, 20 Minutes Or More99308 | 1,086 | $87 |
| Subsequent Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 30 Minutes99309 | 1,060 | $125 |
| Initial Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, 50 Minutes Or More99306 | 248 | $208 |
| Advance Care Planning, First 30 Minutes99497 | 57 | $85 |
| Initial Nursing Facility Care With Moderate Level of Medical Decision Making, Per Day, If Using Time, at Least 35 Minutes99305 | 46 | $153 |
| Subsequent Nursing Facility Care With High Level of Medical Decision Making, Per Day, If Using Time, at Least 45 Minutes |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 168 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Atorvastatin Calcium | 861 | 79 |
| Gabapentin | 458 | 48 |
| Amlodipine Besylate | 399 | 44 |
| Furosemide | 378 | 47 |
| Levothyroxine Sodium | 351 | 39 |
| Apixabanbrand: Eliquis | 310 | 31 |
| Pantoprazole Sodium |
Practice location
Mailing address
Registry dates
- Enumerated
- 2007-03-29
- Last updated
- 2015-02-21
Frequently asked questions
- What is Melissa Frederick's NPI number?
- Melissa Frederick's National Provider Identifier (NPI) is 1033238076, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Melissa Frederick's specialty?
- Melissa Frederick is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Melissa Frederick located?
- Melissa Frederick's practice location on file with NPPES is 423 Broadway, Millbrae, CA 94030-1905.
- What is Melissa Frederick's phone number?
- The practice phone number listed in the NPPES registry for Melissa Frederick is (650) 732-9721.
- Does Melissa Frederick accept Medicare?
- Melissa Frederick is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Melissa Frederick's NPI active?
- Yes — Melissa Frederick's NPI (1033238076) is active in the NPPES registry as of the last update on 2015-02-21.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.