Internal Medicine · San Francisco, CA
NPI
1497859433
Since 2006
Specialty
Internal Medicine
Code 207R00000X
Group practices
1
Medicare group memberships
Hospitals
4
Hospital affiliations
2299 Post St, Ste 205
San Francisco, CA, 94115
Phone (415) 474-7955
Groups this clinician bills Medicare through
Medicare paid, 2024
$468K
7,045 services
Medicare patients, 2024
651
Average age 80
Drug cost, 2024
$3.8M
31,329 prescriptions
Company payments, 2025
$4,767
From 23 companies
Procedures and visits billed to Original Medicare, 2024
In 2024, the most common Medicare service billed by James Y Greenberg was code 99490 (chronic, principal, and transitional care management), 1,973 times for 201 patients. In total James Y Greenberg billed 7,045 services in 34 codes, and Medicare paid $468K.
Official US government data: the national provider registry and Medicare enrollment records, linked by NPI. Last update of this record: 2007-07-08.
| Code |
|---|
| Setting |
|---|
| Services |
|---|
| Patients |
|---|
| Paid per service |
|---|
| Medicare paid |
|---|
| 99490 Chronic, Principal, and Transitional Care Management | Office | 1,973 | 201 | $57.69 | $114K |
| 99213 Office E&M - Established | Office | 1,591 | 585 | $84.87 | $135K |
| G2211 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's | Office | 1,189 | 508 | $14.70 | $17K |
| G0439 Annual wellness visit, includes a personalized prevention plan of service (pps), subsequent visit | Office | 388 | 388 | $158.61 | $62K |
| G0008 Administration of influenza virus vaccine | Office | 279 | 278 | $38.68 | $11K |
| 99214 Office E&M - Established | Office | 264 | 210 | $122.85 | $32K |
| 99442 Telephone Services | Office | 240 | 167 | $84.25 | $20K |
| 90658 Vaccine Product | Office | 224 | 224 | $21.42 | $4,798 |
| G0179 Physician or allowed practitioner re-certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians a | Office | 147 | 66 | $41.84 | $6,151 |
| 99497 Care Management/Coordination | Office | 96 | 95 | $80.10 | $7,690 |
| G0180 Physician or allowed practitioner certification for medicare-covered home health services under a home health plan of care (patient not present), including contacts with home health agency and review of reports of patient status required by physicians and | Office | 93 | 79 | $53.44 | $4,970 |
| 93000 Electrocardiogram | Office | 88 | 85 | $13.82 | $1,216 |
| G0009 Administration of pneumococcal vaccine | Office | 67 | 67 | $38.68 | $2,592 |
| 99212 Office E&M - Established | Office | 57 | 51 | $55.22 | $3,147 |
| 90677 Vaccine Product | Office | 48 | 48 | $292.08 | $14K |
By year: 2022 $442K for 6,076 services; 2023 $468K for 6,322 services; 2024 $468K for 7,045 services.
Lab tests billed to Medicare, 2023
| Test code | Tests | Patients | Paid per test | Medicare paid |
|---|---|---|---|---|
| 82962 Clinical Chemistry | 20 | 16 | $3.21 | $64.2 |
Medicare prescription drug claims, 2024
In 2024, the drug James Y Greenberg prescribed most often to Medicare patients was Amlodipine Besylate, with 1,861 prescriptions and refills. In total James Y Greenberg wrote 31,329 Medicare prescriptions that cost $3.8M.
| Drug | Claims | 30-day fills | Patients | Cost |
|---|---|---|---|---|
| Amlodipine Besylate Generic | 1,861 | 3,269 | 328 | $3,536 |
| Atorvastatin Calcium Generic | 1,827 | 3,403 | 335 | $8,447 |
| Metformin Hcl Generic | 1,160 | 1,925 | 184 | $4,482 |
| Rosuvastatin Calcium Generic | 909 | 1,607 | 160 | $6,293 |
| Levothyroxine Sodium Generic | 895 | 1,483 | 140 | $4,426 |
| Omeprazole Generic | 651 | 1,061 | 141 | $3,097 |
| Dexlansoprazole Dr Dexlansoprazole | 643 | 753 | 74 | $124K |
| Losartan Potassium Generic | 635 | 1,238 | 127 | $3,749 |
| Eliquis Apixaban | 569 | 633 | 75 | $378K |
| Tamsulosin Hcl Generic | 557 | 963 | 105 | $4,684 |
| Linzess Linaclotide | 541 | 571 | 71 | $298K |
| Metoprolol Succinate Generic | 534 | 1,032 | 102 | $4,583 |
| Gabapentin Generic | 513 | 691 | 96 | $4,364 |
| Creon Lipase/Protease/Amylase | 501 | 532 | 61 | $472K |
| Diclofenac Sodium Generic | 496 | 552 | 101 | $18K |
Brand drugs: 6,271 claims; generic drugs: 24,869 claims; opioid claims: 208.
Money and other things of value reported by the companies
In 2025, drug and medical device companies paid James Y Greenberg $4,767 ($4,767 in general payments such as food, travel and fees) from 23 companies. The largest payer was Abbvie Inc. with $1,005.
| Company | Payments | Amount |
|---|---|---|
| Abbvie Inc. ABBV | 33 | $1,005 |
| Novo Nordisk Inc NVO | 21 | $763 |
| Lilly USA, LLC LLY | 14 | $507 |
| Pfizer Inc. PFE | 16 | $466 |
| Boehringer Ingelheim Pharmaceuticals, Inc. | 11 | $384 |
| GlaxoSmithKline, LLC. GSK | 11 | $369 |
| AstraZeneca Pharmaceuticals LP AZN | 9 | $319 |
| Aimmune Therapeutics, Inc. | 8 | $173 |
| Novartis Pharmaceuticals Corporation NVS | 5 | $142 |
| Bayer Healthcare Pharmaceuticals Inc. BAYN.DE | 3 | $92.37 |
Official US government data on Original Medicare services, Medicare prescription drug plans and the payments drug and device companies must report. Services with fewer than 11 patients and drugs with fewer than 11 claims are not published. Procedure codes are shown by number with their public category.