Joseph Smith is an internal medicine physician in California with an NPI number 1861935553. He can be reached at a phone number with the area code 858, which corresponds to the San Diego area in California

. The NPI number 1861935553 is confirmed for Joseph Smith, MD, practicing internal medicine in Rancho Santa Fe, CA

. No other Joseph Smith with an internal medicine specialty in California and a phone number starting with area code 8 was found in the search results. Therefore, the NPI number you are looking for is 1861935553.