Katherine De Guzman
NPI 1477893600 · Family Nurse Practitioner · Baltimore, MD
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Katherine De Guzman is a Family Nurse Practitioner provider in Baltimore, MD (NPI 1477893600).
Provider details
- NPI number
- 1477893600
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Sex
- Female
- Sole proprietor
- No
- License
- 774840 (CA)
Specialties & taxonomies
Physician Assistants & Advanced Practice Nursing Providers
Nursing Service Providers
Physician Assistants & Advanced Practice Nursing Providers
Profile Score
A profile completeness & documented-activity index — NOT a quality, outcomes, or patient-satisfaction rating.
- Registry tenure25% of score
13 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
2 documented practice locations
- Medicare service volume (vs. specialty peers)25% of score
369 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 | 256 | $79 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 89 | $110 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 12 | $159 |
| Telephone Medical Discussion With Physician, 11-20 Minutes99442 | 12 | $78 |
Typical Medicare-allowed amounts for these services range $78–$159 (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 · 12 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Nirmatrelvir/Ritonavirbrand: Paxlovid | 49 | 49 |
| Amoxicillin/Potassium Clavbrand: Amoxicillin-Clavulanate Potass | 33 | 33 |
| Atorvastatin Calcium | 26 | 12 |
| Nitrofurantoin Monohyd/M-Crystbrand: Nitrofurantoin Mono-Macro | 21 | 21 |
| Amlodipine Besylate | 20 | — |
| Levothyroxine Sodium | 20 | — |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$105 across 1 record (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 (1)
- 6801 Coldwater Canyon AveNorth Hollywood, CA 91605-5162Phone: (818) 763-8836
Registry dates
- Enumerated
- 2013-02-25
- Last updated
- 2025-07-07
- Certified
- 2025-07-07
Frequently asked questions
- What is Katherine De Guzman's NPI number?
- Katherine De Guzman's National Provider Identifier (NPI) is 1477893600, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Katherine De Guzman's specialty?
- Katherine De Guzman is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Katherine De Guzman located?
- Katherine De Guzman's practice location on file with NPPES is 6225 Smith Ave Ste B300, Baltimore, MD 21209-3613.
- What is Katherine De Guzman's phone number?
- The practice phone number listed in the NPPES registry for Katherine De Guzman is (410) 583-2653.
- Does Katherine De Guzman accept Medicare?
- Katherine De Guzman is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Katherine De Guzman's NPI active?
- Yes — Katherine De Guzman's NPI (1477893600) is active in the NPPES registry as of the last update on 2025-07-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.