Theresa Guo, M.D.
NPI 1255694196 · Otolaryngology Physician · San Diego, CA
Enrolled with Medicare as Practitioner - Otolaryngology · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Theresa Guo, M.D. is a Otolaryngology Physician provider in San Diego, CA (NPI 1255694196).
Provider details
- NPI number
- 1255694196
- Entity type
- Individual
- Primary specialty
- Otolaryngology PhysicianAllopathic & Osteopathic Physicians
- Credential
- M.D.
- Sex
- Female
- Sole proprietor
- No
- License
- 1255694196 (MD)
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
14 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
6 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
250 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 Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 53 | $67 |
| Diagnostic Exam of Voice Box Using a Flexible Endoscope31575 | 49 | $65 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 48 | $99 |
| New Patient Office Or Other Outpatient Visit With Moderate Level of Medical Decision Making, If Using Time, 45 Minutes Or More99204 | 34 | $134 |
| Fine Needle Aspiration Biopsy Using Ultrasound Guidance, First Growth10005 | 20 | $73 |
| Established Patient Office Or Other Outpatient Visit With Straightforward Medical Decision Making, If Using Time, 10 Minutes Or More |
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) |
|---|---|
| Hydrocodone/Acetaminophenbrand: Hydrocodone-Acetaminophen | 13 |
| Lidocaine Hclbrand: Lidocaine Hcl Viscous | 13 |
| Chlorhexidine Gluconate | 11 |
| Oxycodone Hcl | 11 |
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.
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$10,308 across 15 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 (5)
- 3855 Health Sciences DrLa Jolla, CA 92093-1503Phone: (800) 926-8273Fax: (888) 539-8781
- 4250 1st AveSan Diego, CA 92103Phone: (800) 926-8273Fax: (888) 539-8781
- 6655 Alvarado RdSan Diego, CA 92120-5208Phone: (800) 926-8273Fax: (888) 539-8781
- 16950 Via TazonSan Diego, CA 92127-1607Phone: (800) 926-8273Fax: (888) 539-8781
- 601 N Caroline St6th FloorBaltimore, MD 21287-0006Phone: (410) 955-1686
Registry dates
- Enumerated
- 2012-06-15
- Last updated
- 2025-11-03
- Certified
- 2025-11-03
Frequently asked questions
- What is Theresa Guo's NPI number?
- Theresa Guo's National Provider Identifier (NPI) is 1255694196, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Theresa Guo's specialty?
- Theresa Guo is listed in the NPPES registry with a primary specialty of Otolaryngology Physician (Allopathic & Osteopathic Physicians).
- Where is Theresa Guo located?
- Theresa Guo's practice location on file with NPPES is 200 W Arbor Dr, San Diego, CA 92103-9000.
- What is Theresa Guo's phone number?
- The practice phone number listed in the NPPES registry for Theresa Guo is (800) 926-8273.
- Does Theresa Guo accept Medicare?
- Theresa Guo is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Theresa Guo's NPI active?
- Yes — Theresa Guo's NPI (1255694196) is active in the NPPES registry as of the last update on 2025-11-03.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.