Toby Karyadi, CRNP
NPI 1013170422 · Family Nurse Practitioner · Gaithersburg, MD
Enrolled with Medicare as Practitioner - Nurse Practitioner · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Toby Karyadi, CRNP is a Family Nurse Practitioner provider in Gaithersburg, MD (NPI 1013170422).
Provider details
- NPI number
- 1013170422
- Entity type
- Individual
- Primary specialty
- Family Nurse PractitionerPhysician Assistants & Advanced Practice Nursing Providers
- Credential
- CRNP
- Sex
- Male
- Sole proprietor
- No
- License
- R177118 (MD)
Specialties & taxonomies
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
17 yrs in NPPES registry
- Profile completeness25% of score
100% of core fields populated
- Practice footprint15% of score
1 documented practice location
- Medicare service volume (vs. specialty peers)25% of score
331 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 | 169 | $83 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 92 | $99 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 21 | $122 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report93000 | 20 | $14 |
| Urinalysis, Manual Test81002 | 17 | $3 |
| Annual Depression Screening, 5 to 15 MinutesG0444 |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 24 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Rosuvastatin Calcium | 53 | 16 |
| Atorvastatin Calcium | 48 | 19 |
| Hydrochlorothiazide | 40 | 11 |
| Amlodipine Besylate | 32 | 15 |
| Azithromycin | 30 | 27 |
| Ciprofloxacin Hcl | 28 | 25 |
| Albuterol Sulfatebrand: Albuterol Sulfate Hfa | 27 |
Transparency — industry payments
Based on CMS Open Payments, 2024; not all care is captured.
$1,435 across 69 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
Registry dates
- Enumerated
- 2008-07-07
- Last updated
- 2008-07-07
Frequently asked questions
- What is Toby Karyadi's NPI number?
- Toby Karyadi's National Provider Identifier (NPI) is 1013170422, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Toby Karyadi's specialty?
- Toby Karyadi is listed in the NPPES registry with a primary specialty of Family Nurse Practitioner (Physician Assistants & Advanced Practice Nursing Providers).
- Where is Toby Karyadi located?
- Toby Karyadi's practice location on file with NPPES is 18550 Office Park Dr, Gaithersburg, MD 20886-0586.
- What is Toby Karyadi's phone number?
- The practice phone number listed in the NPPES registry for Toby Karyadi is (301) 330-2700.
- Does Toby Karyadi accept Medicare?
- Toby Karyadi is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Toby Karyadi's NPI active?
- Yes — Toby Karyadi's NPI (1013170422) is active in the NPPES registry as of the last update on 2008-07-07.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.