Joanna Tu, M.D.
NPI 1508392887 · Dermatology Physician · San Francisco, CA
Enrolled with Medicare as Practitioner - Dermatology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Joanna Tu, M.D. is a Dermatology Physician provider in San Francisco, CA (NPI 1508392887).
Provider details
- NPI number
- 1508392887
- Entity type
- Individual
- Primary specialty
- Dermatology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- A157956 (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 tenure28% of score
9 yrs in NPPES registry
- Profile completeness28% of score
100% of core fields populated
- Practice footprint17% of score
3 documented practice locations
- Medicare service volume (vs. specialty peers)28% of score
139 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) |
|---|---|---|
| Destruction of Precancer Skin Growth, 2-14 Growths17003 | 75 | $9 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 37 | $153 |
| Destruction of Precancer Skin Growth, 1 Growth17000 | 27 | $70 |
Typical Medicare-allowed amounts for these services range $9–$153 (2024). The Medicare-allowed amount is what Medicare recognizes for a service under fee-for-service — a reference figure for 2024, not a price quote 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 · 4 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Minoxidil | 20 | — |
| Ketoconazole | 18 | — |
| Triamcinolone Acetonide | 18 | 12 |
| Fluocinonide | 13 | — |
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 no Part D record, 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.
Practice location
Mailing address
Additional practice locations (2)
- 1825 4th St Fl 4San Francisco, CA 94143-2350Phone: (415) 353-7800
- 185 Berry St Lbby 1San Francisco, CA 94107-5705Phone: (415) 353-7800
Registry dates
- Enumerated
- 2017-05-05
- Last updated
- 2023-05-19
- Certified
- 2023-05-19
Frequently asked questions
- What is Joanna Tu's NPI number?
- Joanna Tu's National Provider Identifier (NPI) is 1508392887, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Joanna Tu's specialty?
- Joanna Tu is listed in the NPPES registry with a primary specialty of Dermatology Physician (Allopathic & Osteopathic Physicians).
- Where is Joanna Tu located?
- Joanna Tu's practice location on file with NPPES is 1701 Divisadero St Fl 3, San Francisco, CA 94115-3011.
- What is Joanna Tu's phone number?
- The practice phone number listed in the NPPES registry for Joanna Tu is (415) 353-7800.
- Does Joanna Tu accept Medicare?
- Joanna Tu is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Joanna Tu's NPI active?
- Yes — Joanna Tu's NPI (1508392887) is active in the NPPES registry as of the last update on 2023-05-19.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.