Cassandra Ohlsen, MD
NPI 1356457170 · Internal Medicine Physician · Pacific Grove, CA
Enrolled with Medicare as Practitioner - Internal Medicine · source: CMS PECOS Public Provider Enrollment (2026.04.01)
Cassandra Ohlsen, MD is a Internal Medicine Physician provider in Pacific Grove, CA (NPI 1356457170).
Provider details
- NPI number
- 1356457170
- Entity type
- Individual
- Primary specialty
- Internal Medicine PhysicianAllopathic & Osteopathic Physicians
- Credential
- MD
- Sex
- Female
- Sole proprietor
- No
- License
- G56448 (CA)
Specialties & taxonomies
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
701 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) |
|---|---|---|
| Established Patient Office Or Other Outpatient Visit With Low Level OD Decision Making, If Using Time, 20 Minutes Or More99213 | 323 | $97 |
| Annual Wellness Visit, Includes a Personalized Prevention Plan of Service (pps), Subsequent VisitG0439 | 196 | $139 |
| Established Patient Office Or Other Outpatient Visit With Moderate Level of Decision Making, If Using Time, 30 Minutes Or More99214 | 118 | $136 |
| Established Patient Office Or Other Outpatient Visit With High Level of Medical Decision Making, If Using Time, 40 Minutes Or More99215 | 25 | $191 |
| Office Or Other Outpatient Visit for the Evaluation and Management of Established Patient That May Not Require Presence of Healthcare Professional99211 | 24 | $26 |
| Routine Electrocardiogram (ecg) Using at Least 12 Leads With Interpretation and Report |
What this provider prescribes (Medicare Part D)
Top drugs by Medicare Part D claim volume, 2024 · 60 distinct drugs on file.
| Drug | Part D claims (2024) | Beneficiaries |
|---|---|---|
| Levothyroxine Sodium | 529 | 150 |
| Losartan Potassium | 281 | 87 |
| Atorvastatin Calcium | 277 | 89 |
| Amlodipine Besylate | 231 | 69 |
| Simvastatin | 130 | 43 |
| Rosuvastatin Calcium | 129 | 37 |
| Hydrochlorothiazide | 115 |
Practice location
Mailing address
Registry dates
- Enumerated
- 2006-08-22
- Last updated
- 2024-12-12
- Certified
- 2024-12-12
Frequently asked questions
- What is Cassandra Ohlsen's NPI number?
- Cassandra Ohlsen's National Provider Identifier (NPI) is 1356457170, a unique 10-digit ID issued by CMS for use in standard healthcare transactions.
- What is Cassandra Ohlsen's specialty?
- Cassandra Ohlsen is listed in the NPPES registry with a primary specialty of Internal Medicine Physician (Allopathic & Osteopathic Physicians).
- Where is Cassandra Ohlsen located?
- Cassandra Ohlsen's practice location on file with NPPES is 154 14th St, Pacific Grove, CA 93950-2725.
- What is Cassandra Ohlsen's phone number?
- The practice phone number listed in the NPPES registry for Cassandra Ohlsen is (831) 277-2220.
- Does Cassandra Ohlsen accept Medicare?
- Cassandra Ohlsen is approved to bill Medicare according to CMS PECOS enrollment data (2026.04.01). Confirm current participation with the provider before scheduling.
- Is Cassandra Ohlsen's NPI active?
- Yes — Cassandra Ohlsen's NPI (1356457170) is active in the NPPES registry as of the last update on 2024-12-12.
Source: CMS NPPES Data Dissemination (June 2026). NPI Central is not affiliated with CMS. Data is provided as-is from the public registry.