DR. RYAN CHRISTOPHER JOHNSON (M.D.) – Anatomic Pathology & Clinical Pathology Physician, NPI 1023335072
Anatomic Pathology & Clinical Pathology Physician
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Profile Insights
NPPES metrics only — not quality of care.
1,584 PATHOLOGY in CA
Provider Addresses for DR. RYAN CHRISTOPHER JOHNSON (M.D.)
3700 CALIFORNIA ST
4TH FLOOR PATHOLOGY DEPT.
SAN FRANCISCO, CA 941181618
Phone: (415) 600-2200
Fax: (415) 750-5001
Type: Mailing
PO BOX 14045
RALEIGH, NC 276204045
Phone: (919) 350-8260
Type: Mailing
3000 NEW BERN AVE
RALEIGH, NC 276101231
Phone: (919) 350-8260
Type: Location
NPPES updates history
No NPPES updates recorded for this provider.
Prescription Activity
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Open Payments (CMS)
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Medicare Enrollment & Revalidation
Source: CMS public data · Not endorsed by CMS ·
Educational use only—not medical, billing, or legal advice.
PECOS enrollment status
Participating (accepts Medicare assignment)
Enrollment effective: 2020-04-03
PECOS data refreshed: 2026-05-27
Medicare revalidation (CMS due date list)
Due date not assigned yet
CMS is tracking this Medicare enrollment for revalidation, but has not published a due date.
Enrollment records
1
Earliest due date
Not assigned (TBD)
CMS data updated
2026-06-01
Revalidation progress
- Medicare enrolled
- On CMS revalidation list
- Due date assigned
- Revalidate in PECOS
CMS enrollment records
| Enrollment ID | Type | Specialty | State | Due date |
|---|---|---|---|---|
| I20200403002125 | I | Pathology | NC | TBD |
What to do next
- No action required while the due date shows TBD.
- Check the CMS Revalidation Lookup Tool periodically — CMS updates the list about every 60 days.
- Do not submit a revalidation application in PECOS until CMS publishes a concrete due date.
Prepare CMS-855 application → · Look up this NPI in PECOS → · Verify on CMS PECOS
Medicare Utilization (FFS)
Source: CMS public data · Not endorsed by CMS · Beneficiary counts under 11 are suppressed in source data ·
Educational use only—not medical, billing, or legal advice.
Top Medicare procedures (2023) · refreshed 2026-05-27
| HCPCS | Description | Services | Beneficiaries | Medicare allowed |
|---|---|---|---|---|
| 88305 | Pathology examination of tissue using a microscope, intermediate complexity | 535 | 287 | $0 |
| 88341 | Special stained specimen slides to examine tissue, each additional procedure | 122 | 25 | $0 |
| 88307 | Pathology examination of tissue using a microscope, moderately high complexity | 81 | 53 | $0 |
| 88112 | Cell examination of specimen, selective cellular enhancement technique | 75 | 63 | $0 |
| 88304 | Pathology examination of tissue using a microscope, moderately low complexity | 47 | 41 | $0 |
Insurance plans in this area (ZIP 94118)
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Provider's Procedures
| Specialty | Practice State | HCPCS Code | Description | Service Count | Beneficiary Count |
|---|---|---|---|---|---|
| PATHOLOGY | CA | 88312 | Special stained specimen slides to identify organisms including interpretation and report | 105 | 62 |
Group practice members
| Name | Specialty | State |
|---|---|---|
| P A T H O L O G Y | OH | |
| - | NC | |
| P A T H O L O G Y | NC | |
| P A T H O L O G Y | NC | |
| P A T H O L O G Y | OH | |
| P A T H O L O G Y | NC | |
| P A T H O L O G Y | IN | |
| P A T H O L O G Y | WI | |
| P A T H O L O G Y | VA | |
| Hematology, Pathology | NC |
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