Physician Profile
Unclaimed ProfileAbout LOPEZ
Based in Fairfield, CA, Jonathan D Lopez, MD is listed in the NPI registry under hematology/oncology. Jonathan graduated from Uniformed Services Uhs Fe Hebert School of Med in 1998. Jonathan is also listed as specializing in hematology & oncology. According to Medicare claims data, Jonathan cared for 780 Medicare patients across 2,025 services.
Summarised automatically from public NPI registry and CMS Medicare data. Not written or reviewed by this provider. Claim this profile to replace it.
Education & Training
Areas of Expertise
Licensing & Certification
Source: NPPES NPI Registry
Contact Information
- (707) 646-4000
- Email not available
Practice Locations
1860 PENNSYLVANIA AVE SUITE 230
Fairfield, CA 94533
Procedures Most Often Billed to Medicare
2,025 services · 780 patients · 10 distinct codes
| Procedure | Type | Code | Services |
|---|---|---|---|
| Established patient office or other outpatient visit with moderate level of decision making, if using time, 30 minutes or more | Office visit | 99214 |
742 |
| Visit complexity inherent to evaluation and management associated with medical care services that serve as the continuing focal point for all needed health care services and/or with medical care services that are part of ongoing care related to a patient' | Billing code | G2211 |
424 |
| Established patient office or other outpatient visit with high level of medical decision making, if using time, 40 minutes or more | Office visit | 99215 |
412 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 35 minutes | Office visit | 99232 |
254 |
| Initial hospital care with moderate level of medical decision making, if using time, at least 75 minutes | Office visit | 99223 |
82 |
| New patient office or other outpatient visit with a high level of medical decision making, if using time, 60 minutes or more | Office visit | 99205 |
41 |
| Advance care planning, first 30 minutes | Office visit | 99497 |
23 |
| Prolonged office or other outpatient evaluation and management service(s) beyond the maximum required time of the primary procedure which has been selected using total time on the date of the primary service; each additional 15 minutes by the physician or | Billing code | G2212 |
17 |
| Subsequent hospital care with moderate levelof medical decision making, if using time, at least 50 minutes | Office visit | 99233 |
17 |
| Prolonged hospital inpatient or observation care evaluation and management service(s) beyond the total time for the primary service (when the primary service has been selected using time on the date of the primary service); each additional 15 minutes by t | Billing code | G0316 |
13 |
Source: CMS Medicare public data. Shows how often procedures were billed — not quality of care or patient satisfaction.
Related providers
Connections drawn from the registry and from what providers have told us. A link here is not a referral or an endorsement.
Also at this address 4
Providers at the same street address. Each files their own registry entry, so a shared practice often appears under several different names.
Other hematology/oncology specialists in Fairfield 2
Same specialty, same city.
Trained at Uniformed Services Uhs Fe Hebert School of Med 8
Other providers in the same specialty who trained at the same institution.
More connections — 8 related providers in 1 group
Class of 1998 at Uniformed Services Uhs Fe Hebert School of Med 8
Providers who graduated from the same medical school in the same year.
Common questions
What does Dr. Lopez specialize in?
Dr. Lopez is a hematology/oncology in Fairfield, CA. This is the primary taxonomy recorded against the NPI in the federal registry, listed there as “HEMATOLOGY/ONCOLOGY”.
NPI registry
Where is Dr. Lopez located?
Dr. Lopez is listed at 1860 PENNSYLVANIA AVE SUITE 230, Fairfield, CA 94533. Addresses come from the NPI registry and can lag a move, so confirm before travelling.
NPI registry
What is Dr. Lopez's phone number?
The number on file is (707) 646-4000. Guide.md cannot book appointments or pass on messages — please call the office directly.
NPI registry
What is Dr. Lopez's NPI number?
Dr. Lopez's National Provider Identifier is 1881682714. It is issued by the Centers for Medicare & Medicaid Services and is unique and permanent — it does not change if they move practice.
NPI registry
Where did Dr. Lopez go to medical school?
Dr. Lopez attended Uniformed Services Uhs Fe Hebert School of Med, graduating in 1998. This comes from the CMS National Downloadable File.
CMS public data
How long has Dr. Lopez been practicing?
Dr. Lopez has 28 years experience. Calculated from a graduation year of 1998, reported in the CMS National Downloadable File.
CMS public data
What does Dr. Lopez do most often?
According to Medicare billing data, Dr. Lopez the Medicare record under this individual NPI shows mainly office visits and diagnostic testing. Hospital-based physicians usually have their procedural work billed by the facility rather than under their own number, so this is a floor on their practice, not a description of it. This reflects Medicare patients only and is billing volume, not a measure of quality.
Medicare claims
Has Dr. Lopez confirmed this information?
Not yet. This profile is built from public federal data and has not been confirmed by Dr. Lopez. If this is you, claiming it is free.
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Claim this profileProvider data sourced from the NPPES NPI Registry and CMS public datasets. Information is provided for reference and is not medical advice.